One thing you might think about is adding in a delay between the tool turning off and the gates closing and dust collector turning off. Give the system some time to clear any dust that might be in the system and/or floating around the tool as it spins down.
I think Matthias Wandel has a circuit that would work, a low parts-count delay-on relay board. I think he used it to replace the centrifugal switch in a belt sander motor.
Came here to make this comment, as for the nuts and bolts of it, it's painfully hard to beat the price of just buying one of the 99cent timer relay modules sold on ebay.
I agree, a delay for the vacuum to shut down after about 15 seconds or so. This also makes it so that if you move from one piece of work to another the collector motor isn't turning off/on constantly while switching work pieces (this part would require a longer delay, probably)
Generally a shop tool stops making dust/shards for a few seconds before it's turned off anyway. My cuts are through and clear of the blade before I shut off the table saw. Same with the drill press or router. A delay mechanism might be a lot of work for no net gain.
Even though all your relays and actuators worked independently, it's still an amazing feeling when something you engineered yourself comes to fruition and works just as you envisioned it would. Loved your reaction to that!
and ....without an Arduino !!! :-) It's even more satisfying when the solutions is fully effective and when the solution is simple and inexpensive .... That puts a big grin on my face... :-)
How could anyone not like this channel. Jeremy is very humble guy who loves to share what he knows. He's so great at explaining things. He probably one of the greatest neighbors, husband and dad to have. He can fix anything and saves his family and all his subscribers lots of money. When I watch his videos I feel like I could do anything. What's not to like?! Keep being awesome Jeremy!! Thanks for all you share. GOD bless you.
Only a white guy would describe a black guy (and never another white guy) as "humble". This is another way of saying he's "tame", not t threat, etc. In fact, he's no different than any other UA-camr. Well, he's smarter than most, and does not hide it, and why should he. I am not a BLMer or any other such nonsense, but I am surprised you didn't describe him as "articulate and bright."
@@raymondjackson6069 What DumbAss statement on your part, only racist thought or comment, has come out of your mouth. Humility is a virtuous characteristic for anyone to have.
@@bobkelly3944 Whatever you say Bob. You must be a white guy, because only a white guy would term anything racially defined as racist. Obviously, you don't know what racism is or how it is practiced, its effects, or ramifications, yet you live it and enforce it every day. You seldom hear a white guy call another white "humble". This is a characteristic when used by white men to describe the perfect negro - for you. You're saying he's tame, not a threat. He's a nice guy, he's a brilliant guy, but I would not call him humble. He's just a man. Relating much-needed knowledge, and let's leave it at that. I would say, if you want cultural enlightenment or understanding, take a black history course or something, but the BLMers have screwed that up royally. So you're kinda on your own, but you seem to be trying to get there, so good luck to you partner.
@Raymond Jackson You must have a lot of issues from your childhood or something. The "original comment" that you commented on ( not mine ,to be clear) was completely absent of any malice or condescension. To read anything other than respect and goodwill into his comments shows how misguided and warped your thought processes are.
@@bobkelly3944, aren't you virtuous. Look, I'm trying to school you, man. If you can't do that, you should just shut up. The more you talk, the more racist you sound in trying to explain away your latent and ingrained racism. You are a snide, self-righteous white guy, spewing those superlatives to make you feel good about being white, while all the time, marginalizing this man by describing him by an adjective that ignores his humanity, by highlighting his imagined (on your part) subjugation (on your part) to you (on your part). This is your way of taking ownership of this guy's soul. I am done with this, partner, and hope somewhere you can find Truth.
Your comment "with all the knowledge on the internet... one of you guys is gonna tell me what I'm supposed to put here..." instantly earned my like and this comment. Great video, thank you for your work.
Nice work! I also automated my dust collector and blast gates. I used the same dual action air cylinders and pneumatic relays, but made my own gates with a 1/4" plate of melamine housed in a 2x6 block. The nice thing is that these gates are self clearing. Then I used a PLC controller with IO modules. I added current sensors in my tool AC supply outlets. This allowed a tool on current detect to trigger the blast gate and turn on the dust collector. The bonus is that tool off detect will allow the dust collector to run for a minute to clear the pipes. You can make this all programmable with the PLC and get nice optical isolation to boot. Great videos, keep em coming!
Systems Planet I’m an automation technician, and my favorite pastime is fixing stuff... so I beg to differ. 😂 everything I’ve automated so far has worked great, with two exceptions. Both things I made more efficient designs and wanted to replace anyway! Lol.
Automation can be awesome, but only when it works as needed every time without any issues. It has it's downsides in the loss of operational skills, thought on what you're doing, and in distancing the human element from the work you're doing. Some of us simply prefer simple and hands-on even if something 'better' is possible.
@@SystemsPlanet Yes and No. The problem with automation that is badly engineered is it fails during its lifetime. If you want to use your shop dust collection system without redesign or maintenance for 10 years then you need to design it to last 20. Using flimsy plastic blast gates with a 2 year life expectancy will have predictable results. Using quick wiring connections used for test rigs rather than soldered joints will have predictable results. Automation is just engineering, it has to be designed. What I can see of this system is it's very well designed, and looks well engineered. Connections are solid, virtually no use of bailing wire or duct tape ... great job all and all.
I almost high-fived the screen when your new system came to life! I would love to hang out with you just for the sake of learning new things. What an awesome project.
About 40 years ago I came across an article in Fine Woodworking magazine explaining how to install a relay to automatically turn on the dust collector when any of my machines were engaged. Though I thought the $70.00 was a bit high ;-), I ordered one and installed on my system. It was a godsend and has worked flawlessly all these years. I have looked for an upgrade to install automatic blast gates, but haven’t seen a reasonable design…until now. The electronics my be a bit beyond my comfort zone. You have a great channel, good content and very understandable.
I used to work in a huge industrial grade cabinet shop that had giant dust collectors. We had several fires inside the system and although we didn't prove they were started by static discharge, after we added copious grounding, we stopped having fires.
Yeah I've been shocked from my first CNC router dust collector hose when cutting plastic. Never tried grounding that one. At work we move starch through a plastic chute and it has a copper wire wrapped around the outside of it. No problems. Down at our sister plant that makes polystyrene beads and air-veys them into railcars, you will get a static shock that knocks you down if you touch an ungrounded chute while it's loading. Some shocking moments to be sure.
As Mr. Fielding said, I've never heard of a documented actual case of a static-caused fire in a home workshop. If it's really a concern, plumb your DC system with metal pipe. (Heavier gauge than typical HVAC pipe, which has been reported to collapse from the vacuum pulled by a DC system.)
Men your videos are by far the best on youtube as guidance for anyone who enjoy mechanics woodworking electrical and do it all , you are very talented guy with selfrespect, thank you for you awsome work
A bunch of us guys out of high school and college put together a wood shop and made a dust collection system. Made it out of a leaf collection system (one of the walk behind units with a 8 hp gas motor) we used an electric motor and made a "cyclone" type dust bin with a detachable barrel...very convenient. That was in 1974. The availability of stuff was different and so was the ability to research how to do things. New ideas required a thing called the Readers Guide to Periodical Literature at the library. No internet back then. I taught myself quite a bit that way. To me it was like heaven when I could do my research online.
I really enjoyed your automatic blast gates. I made a simar set for my shop. I made the gates out of 1/4 melamine slider and a wood enclosure, with the same air cylinder and pneumatic switch you used. All in, less than $40 per gate. The self clearing of this design is a big improvement over most commercial gates. I added current sensing to each tool and controlled the gates and dust collector remotely with a PLC controller. This allows the dust collector to run for an extra minute to clear the dust in the pipes. The air compressor is also controlled by the PLC for full autmation. Happy sawdust to you!
Ah yes don't we all dream of a Dream shop like yours. Excellent piece. and your expression of joy was great. Thanks for sharing. I just walk around and turn on switches .
I believe the reason why you havent been able to find articals on dust fires, is probably because the news rarely knows the source of the fire, only that a building caught fire. If the fire were to result in a substaintial loss of life and or proerty, then there might be some follow up. I personally worked in a facility that has multiple high speed CNC routers and a slew of other wood cutting machines, all connected to a large central collector. It caught fire every couple years, totalling something like 4 or 5 fires before we solved the issues. Dust collector fire prevention falls under NFPA 654 and grounding is part of the code.
Thanks for the NFPA reference. An even worse condition is created when PVC or PP piping is used for clothes dryer venting or paper dust from shredders. The static charge from air flowing through the PVC causes all of the dust and lint to be come charged and stick to everything. This causes buildup of fuel for fire. Always use metal vent material and provide good bonding and a ground. It is illegal to use plastic piping for clothes dryer venting for a reason.
It's very difficult to effectively ground PVC pipe and plastic blast gates. Grounding the system by attaching a wire to the PVC is not a solution. The vent vent pipes on tanker inert gas systems are very susceptible to corrosion and static charge buildup. Bondstrand 7000M piping was developed to provide a glass reinforced pipe that was conductive and could be grounded. Flanges and couplings are conductive and can be grounded. Bondstrand 7000M is not inexpensive, but is conductive. It is meant for industrial useage. Overall galvanized vent ducting is probably the most cost effective choice. If you use a blast gate or valve that is made from a non-conductive material, such as wood or plastic you need a bonding wire to assure the sections of duct do not become isolated.
You're gonna hate that cheap plastic blast gate. Swap it out for an aluminum one with an open end so dust doesn't accumulate. Cool video! Thank you for sharing
3:00 When you use a puller, not only do you have to take care not to warp the impeller or pulley or whatever (BTDT), as you know, but you also have to protect the tip of the shaft that the puller screw is pushing on. In this case, a sacrificial bolt, or series of bolts that take the punishment of the tip of that puller screw.
That is the right stuff. As a matter of fact when I worked with the inventer of a large (truck mount size dual motor) portable carpet cleaner for high rises, in order to seal the very high pressure and high temperature hot water fittings, we used silicone and nothing else. The difference is that when you rebuild it, much later, the silicone needs to be cleaned off whereas a gasket with sealer is a little easier. Thank you for the videos Jeremy !
LOVE your videos man! Thank you! Love seeing the real (painful at times) process, so I feel better. and yes, PLEASE do the video on the pneumatic components. That's something I'd like to learn about.
That static discharge is real as voltage will build up, but likely with few amps. In any case, grounding is prudent both for fires and keeping your other electronics from harm. Really like your channel, approach to problems and great, enjoyable personality.
I've been involved in a number of projects, of varying complexity. Solutions are arrived at incrementally, but... there is that unadulterated joy when long hours of thought and work come together in a solution that works... yeah, you captured that :)
I used relays not in the workshop (don't have one yet) but to automate switching the power supply of a 12v peltier cooler in the van between the solar panel + aux battery and the alternator + car battery. When cruising the cooler run on the alternator (giving the aux battery a chance to fully recharge) and when stoped the cooler run on solar power. So fulfilling to put your hands to good use 😋 Your work gives me a ton of exciting ideas for when I'll have a chance to settle down and build a shop. Keep up the good work 👍
Just a tip: it's likely you couldn't find the impeller you needed because B is a new rendition as a fix. They probably had problems with the type of shaft size you have on yours and decided to switch to a bigger one at some point. Here's the tip: instead of searching on what is an obfuscated view of real stocks, give calls to various outfits that sell these kinds of parts. Obviously, you'll run into more hassle than its initially worth it, but you'll also run into that person who will say "ah, yeah, we still have that part". This tip isn't specifically for this blower, you did good with the shaft "collet", but what i'm trying to say is, sometimes the internet isn't exactly an exact portrayal of reality and it can cut off avenues. All that jabble being said, nice project, certainly a cool approach to the old adage that if it's not easy, we won't use it.
As long as it's not the Ferrari dealer. Those idiots don't even know what a superseded part number is. They'll just say they don't have it and can't get it.
With enough persistence and time unobtanium can be found. I dug up what may have been the last new ignition coil for my very old weedeater that way- it was an underengineered part and they all fail. So when I got the "ain't got any" answer I always asked advice on who might have it then followed up every lead. A year of looking off-and-on and I found it at a backwoods shop ran by a man who was once a big city dealer but retired to Idaho about the time it went out of production, taking all his inventory with him. The guy who mentioned him had once worked for him in the big city a thousand miles away and guessed that there wasn't much call for weedeater parts in a forest so he might still have one- and he did! Not only that, but he let me have it at the decades-old price too. Someone somewhere has what you need in usable condition; you just gotta find them, that's all.
Something to consider with automation, once it gets beyond the desk, or bench, is safety. Not to be a troll, but when you do distributed things, like control a dust collector from across the shop, or from multiple places across the shop, it's worth considering how things are going to work in an emergency situation. EG, Do you want the dust collector to shut down when you hit the E-stop button on the machine?, and so forth. With the dust collection gate, you considered spring loading it in one direction so you only need air pressure or some other effort source to move it the opposite direction. Another consideration is, in what state is the gate most safe, and would it be desirable to spring load it to this state, so a source of power is needed to get out of that state. When power is lost, control is lost, you get an automatic return to the safer state. I'm not advocating one way is better, only that it's worth considering when delving into automating things.
Hi Greg, I agree with what your saying totally. The Blast gate may be a very inert item to think about safety for, but that's where your head should constantly be when building automation into the shop. The Whole "What If" mentality. I have had some experience with home brewed automation failures that were quite costly which -finally- got me to think about the "What If's" before putting the system together. I love what Jeremy did here and, let's be honest , even with no thought about safety, things will probably work out if something happened. The thing I think Greg and I are trying to get across is Having the mindset when you start into a project so that your thinking about those "What If's" as your going along. Ok, Rant off...
@@tgirard123 It's obvious you two work in industrial environments. Where I work, safety is drilled into your head. It's to the point I walk around in public, roll my eyes and cringe at all the safety hazards I see, even the smallest ones.
As a retired industrial instrument installer/technician, I have seen a lot of safety features added under the 'what if' scenarios. Most were instituted to mitigate losses due to human error in day to day operations. The rest were to stop losses due to actions beyond operator control, such as weather, power failure, mechanical malfunction, software failure, etc. After several years of gate automation experience, I have redesigned my own blast gates to compensate for such things as the loss of power or control signal/air. After adding positive stop position switches and a full chip drum or clogged filter shutdown, and just about all the fun is removed. Mine has an alarm for each gate with an LED start-up sequence to simplify troubleshooting in case there is a failure.
Shop/small garage organization. Stumbled into your channel, and loving your calm demeanor, smart and sensible approach. Thanks for letting us into your shop.
The dust collector fire I have never heard of in a small/home shop. I have heard of and seen the aftermath of a dust collector fire but only in very large manufacturing facilities where the collection system is pretty much 24/7. Extra safe is always best! Love your videos!
The one realistic use case I've heard of for grounding is that it will mean less dust buildup (caused from static making it "stick"). That seems like a reasonable reason for grounding, but I'm thinking as short as your run is, it's probably not needed for that either.
Hey Jeremy, awesome work. I just use one of those remote switches. You have up to five units plugged in around the place (I just use one) and the remote is in my pocket. As for gates, I put some manual ones in but it doesn’t seem to make that much difference wether there are a couple open or not the suction does not drop off much. Maybe because they’re low pressure high volume. Now, more importantly, take that final collection bag and throw it away. They do more harm than good because they have to let air through them they also let the really dangerous micro particles through and it’s the micro particles that get trapped in your lungs and stuff them especially if you’re cutting/sanding MDF ect as the glue dust is dangerous. I see the way yours works most of the dust goes in the drum but those super fine particles don’t drop out of the air flow and pass through the bag. I use a drum like yours but I got one with a removable lid and fitted three truck air cleaners to the lid so all exhaust air passes through the filters. You could put a drum with filters fitted where you originally wanted it in the corner and connect it to your outlet from the vacuum via a hose. The best way is to have the final outlet outside of your workshop. There is now a lot of information on the internet about woodworkers and the dangers of fine dust particles. Please consider reading about it and possibly warning your subscribers. I’m not a safety nanny but this is a real issue with potentially deadly results over the long term. Cheers Stuart 🇦🇺
Unless you are dealing with dust on the scale of a few micrometers, the very limited energy of a electrostatic discharge should not be enough to cause ignition. The dust concentration in the pipe is also fairly low, ignitions will very likely not develop into a dust explosion.
I can tell you the static generated by my dust collector is not low energy if im doing a process that generates a large amount of particles for extended periods. Obviously Im not grounded but I'm considering adding some sections near high touch points just to eliminate those jolts. I swear ive been hit by discharges 3-4 inches away, and while not particularly dangerous, is really annoying.
I just ran some aluminum tape on the outside of my pipe from the dust collectors case, to the end of each run. Also put it around the connections for extra sealing. Eliminated all of the static and increased the suction for a small price and very little time!
He's right about the particle size. its also a concentration issue. you need to reach a minimum concentration in the air for it to be explosive, same as grain dust. if you clean out the collector regularly it should be low risk. the catch bin is where you have the greatest risk because the air flow through the pipe would make reaching critical concentration difficult.
We had to add a ground strap that sits in our dust collection bin, in the saw dust itself. Not because of the fire hazard, but because the static will jack with our CNC router computers.
so, while i haven't had static start a fire, I can definitely confirm that dust against plastic can cause some very serious charge buildup and arcing. I had an issue with my CNC machine where during a really long job all of a sudden the machine would abort with a message like it hit one of the end-stop switches. But it never did. Turns out, arcing from the dust collection was causing such a big EMI spike that the microcontroller reading the switches picked it up as a switch throw. So, in the interest of your CNC machine, and the additional safety of protecting against huge charge buildup, i'd go ahead and ground those pipes.
How does one ground Plastic? As a former electrician (20 years ago) we would bond/ground the metallic parts by running a jumper in parallel with the plastic part (seal tight for example) and bond the connectors. Although the plastic seal tight with plastic connectors was never bonded.
I was running some lumber through a drum sander, and kept getting "burned" by the chassis. Eventually figured out that the friction of the dust on the collector hose was generating a HUGE voltage differential, and I was the only path to ground when I got too close. I was going to add an arduino-driven dust gate and run a signal wire back alongside the pipe to the dust collector's relay-driven power switch, but would want to REALLY ground everything to avoid having the circuit board fried when the input pins suddenly jumped to 700v.
@@Reign_In_Blood_963 most effective way would be to run a conductor along the inside of the pipe in contact with the interior sidewall since that's where most of the static charge is and gave it an exit somewhere near a grounding point. Alternately if the system already exists, use some kind of metal strapping (like the stuff with the holes all along its length) and screw through that at intervals all the way to the interior of the pipe to conduct the static charge outside. Strictly speaking you would need several conductors around the circumference of the pipe to maximise static reduction since the plastic pipe doesn't efficiently conduct charge around it's surface. In a home setup it's unlikely to generate enough static to a significant risk, and the duty cycle would probably give sufficient time for the charge to self dissipate anyway.
I love how you still have that 2hp motor on your miter saw! Also if you don't mind my asking, where do you get your pulleys from? I have a ton of motors that I would love to drive by belt and see how they would function as generators. But I got to get some pulleys for that, and I'm uncertain where to get them.
I've gotten them from Grainger before. Grainger is usually very high priced on many things and they charge a premium for having stuff in a "brick and mortar" but their die cast zinc pulleys for v-belts were actually priced competitively.
There is a video on that saw somewhere...oh, was the video right before this: ua-cam.com/video/gMVIdDKgG5A/v-deo.html As for the pulleys, I think he uses a lot of salvaged parts like treadmill motors and such that have them, but you can get some on kinda cheap from ebay, or if you're not too picky on the sizing, a u-pull-it auto parts yard can get you come on the cheap.
I have a local store that sells pulleys of various shapes and sizes... (Tractor supply) ... If I need something that they don't carry... then I order from McMastercarr online.... Northern tool might also have what your looking for...
It seems like there is a lot more personality in the video, than in older ones. I like it this way. It takes an otherwise dry subject. And turns the video into an engaging exploration of it. Look forward to your next video. :)
I was in a place that was using PVC to move air at a fairly high velocity. The maintenance guy was very proud that he used PVC and everyone else was using steel. He too was using a gate guillotine valve. Anyway, the day I was there it was particularly cold and when the air was flowing everything was fine, but when he shut the guillotine valve, nearly all the PVC shattered at once. No one was injured, but given the shape of the shards and the violence with which everything shattered, it could have ended badly. I have also witnesses a giant HVAC duct collaps because one damper closed while the other remained open. Air has mass and it does surprising things when it stops suddenly. Your volume of air is less, but he was using SCH 40 and you are yard drainage pipe, which has a wall thickness that's 3x thinner than SCH 40, for the 3" or 4" diameters. You may be fine, but I thought I would offer you a word of caution.
It should be fine in his case because he has plenty of non-glued joints and very large diameter pipe. An overpressure event of even 1/2 atm would produce ~90lbs of separation force to every unglued joint, which should prevent any serious over-pressures by simply releasing them into open air.
@@avialexander Without knowing the air's velocity, volume, temperature, and %RH, in addition to how quickly the valve is shut; you can't know the developed pressure or the shock it would induced into the system. I stand by my potentially over-cautious warning. But, I doubt anyone can tell video guy that his system is safe, and have numbers to back it up. Also, he said that he wasn't using SCH 40 pipe, he was using drainage pipe. This is usually SDR35 and unlike solid walled PVC, it's aerated PVC, kind of like a foam. This pipe is strictly for unobstructed drainage, it has no pressure rating. Shock happens faster than the non-glued joints can slip apart.
@@cornpop7805 Interesting points. I'm a CFD engineer, so I know nothing about PVC pipe. What I do know is fluids. And shocks travel at the speed of sound, which in air is 1125 fps, and if you want to ignore effects of compression, divide that by three, so ~350 fps. I'd estimate his duct system's longest branch is ~35 ft, which means that the pressure equalizes in the entire system in 0.1 seconds or less. So to get a pressure spike, he'd have to close the gate in 0.1 seconds. In the video that's not the case, but it could be done. If you wanted to evaluate it at that speed, then you'd have to start using those properties you mentioned as well as dynamic compression effects. I'm sure there's a table somewhere to do it quickly.
@@avialexander I mentioned this in my original post, but I've seen SCH 40 PVC pipes shatter and giant duct work crush, both due to the introduction of a complete and sudden restriction in air flow. Both times, someone could have been killed. I'm not saying that I'm sure that the piping system in the video presents as much danger, but the pipe is thin, weak, and unrated. That's a large enough motor and impeller to make me think the air has meaningful velocity. We both know that F=MA and air has mass, as does the debris. I woudn't feel right to see a similar setup and not offer a word of warning. It would be interesting to figure or test this system out. I've done some CFD and associated R&D. Fluid dynamics is a pretty complicated subject. It certainly takes a properly parameterized model to give you reasonably good results. In order to prove the software worked well to our owners, we had three different engineers (plus the CFD seller) working seperately to model the same peice of somewhat simple air handling equipment. We had lots of real pressure and flow measurements - plus video of smoke tests for the equipment, but all we got to work with was the fan specs and the geometry of the equipment. None of us came up with similar results to the real numbers. So, the software failed our owner's tests. We did further testing, where we ended up creating several simplified versions of equipment, then parameterize the models to match reality. We eventually came up with parameters for each architype, to use in similar cases. Without that feedback, our CFD software wasn't as good as our experienced guesswork. Even the software company's best engineer failed to create an accurate model, without some real world feedback. The systems we were building were no more complicated than a residential refrigerator. I started cheating and created dumbed down models of our equipment, this helped the software perform better. It really threw it off to have small complex interfaces and tight corners. My simulations also ran in a couple hours, rather than 10 or 12.
you know what Jeremy, more than the excellent video contents. i like your face and voice. Both are supremely pleasant and have an important contribution in all the videos you make
That was an excellent narrative of a true engineer's journey, how they'd approach a problem and play whack-a-mole to each problem along the way. Thank you for that, Jeremy. And congrats on getting it working!
Something to watch out for would be the channels of the blast gate slowly building up with material, and eventually, not closing all the way. I'd keep a stiff wire handy, and make it easy to remove the hose, so you can dig out the compacted debris every couple months. I learned the hard way. Thanks, and great videos.
I always love it when you say 'that shouldn't cause any problems'... :-) I sure wish you were my neighbor. I'd let you take over my barn for projects and just watch and learn. I love your attitude. Thanks or the great videos and shared knowledge.
I've been an explosives expert for 18 years. If you have to add a grounding wire to your dust collection, you need to add one to your powdered creamer (yep, it's flammable). It all has to do with flash point and the heat of a static charge that occurs through time. Yes, it is possible but so is getting zapped with lightening 32 times during one storm. Possible but not probable. BTW... I love this video (and the others). I like the way you talk like you don't know what you're doing but your big brain is answering questions your mouth hasn't asked yet! LOL Keep up the good work.
Hello, I just finished a very rudimentary auto turn on, and shut-off for my dust collector. The basis is a current sensing module, with the donut hole. I intercepted the shop heavy 20 amp tool circuit with the module. Anytime a tool is turned on, it goes through the current sensor, activates a relay, turning on the dust collector. That's 2/3 the equation, the last third is operating the blast gates, which is how I found your video. You're brilliant, keep up the good work!
Found your channel from Matthias Wandel's recent recommendation. Can't believe I haven't found it earlier. Right up my alley with the engineering/woodworking content. Subscribed and will watch your older videos.
The most elegant system for grounding the PVC tubing, and for at least peace of mind... Run speaker wire along the outside of the ducting, and every so often strip back and wrap/connect the bare wire part to a pointy screw that passes through the wall of the duct and into the air stream. Ground the end of the wire... that's it.
Awesome video. I really enjoyed your approach and attitude when solving problems. So great how you roll with the punches and keep smiling when things get frustrating. You made me laugh while watching this because I have had similar experiences and all you can do is roll with it. But rolling with it while maintaining a great attitude is so refreshing to see. Keep up the good work and thanks for marking that 13:46 count in my life.
Your a very happy person, a great enthusiasm, a very good teacher and very skilled. Thank you. I have a project of rotation through 3 tools in only one space but must be rotated vertically.
Hi Jeremy, like what you did with the dust extractor system. What I am planing on doing with mine is having a wall mounted cyclone primary up high with the dust shoot flowing to a sealed barrel and the air outlet from the cyclone going onto the blower. The blower outlet will have a filter/outside bypass. I'm planing to use a current activating relay to turn on the dust extractor. The good thing with this set up is it can be wall mounted and save space in your workshop.
I wasn't too concerned about my shop catching on fire but I grounded mine and now I don't get shocked. I used to just get zapped every time I moved with the darn thing prior to grounding. It's much more pleasant to use now.
Love it. I was an industrial electronics tech for years. Joke was anything with more than 5 color wires was mine. Love how you take things down and build them up better after a lot of thought. Make in ‘improvement’ and back up when it don’t work. God knows I’ve been there.
I made something like this a couple years ago! My gates are 3d printed and actuated by little 5v mini servos, and mounted to that same type of pipe. The cool thing about the servo is that I can open different gates partway if I ever want one area to run at less than full blast.
One thing you might think about is adding in a delay between the tool turning off and the gates closing and dust collector turning off. Give the system some time to clear any dust that might be in the system and/or floating around the tool as it spins down.
I think Matthias Wandel has a circuit that would work, a low parts-count delay-on relay board. I think he used it to replace the centrifugal switch in a belt sander motor.
Came here to make this comment, as for the nuts and bolts of it, it's painfully hard to beat the price of just buying one of the 99cent timer relay modules sold on ebay.
I agree, a delay for the vacuum to shut down after about 15 seconds or so. This also makes it so that if you move from one piece of work to another the collector motor isn't turning off/on constantly while switching work pieces (this part would require a longer delay, probably)
Slap a cap in parallel with the coil and a resistor in series. Easy cheesy!
Generally a shop tool stops making dust/shards for a few seconds before it's turned off anyway. My cuts are through and clear of the blade before I shut off the table saw. Same with the drill press or router. A delay mechanism might be a lot of work for no net gain.
Even though all your relays and actuators worked independently, it's still an amazing feeling when something you engineered yourself comes to fruition and works just as you envisioned it would. Loved your reaction to that!
and ....without an Arduino !!! :-) It's even more satisfying when the solutions is fully effective and when the solution is simple and inexpensive .... That puts a big grin on my face... :-)
Love the comment about silicone
we all know you are here just to see if the air in the dust collector flows in a laminar way....
@@oskimac Spoiler: it won't
@@oskimac hahaha 😆
I wonder how long it took Jeremy to get it apart after it was siliconed? That stuff is like glue.
How could anyone not like this channel. Jeremy is very humble guy who loves to share what he knows. He's so great at explaining things. He probably one of the greatest neighbors, husband and dad to have. He can fix anything and saves his family and all his subscribers lots of money. When I watch his videos I feel like I could do anything. What's not to like?! Keep being awesome Jeremy!! Thanks for all you share. GOD bless you.
Only a white guy would describe a black guy (and never another white guy) as "humble". This is another way of saying he's "tame", not t threat, etc. In fact, he's no different than any other UA-camr. Well, he's smarter than most, and does not hide it, and why should he. I am not a BLMer or any other such nonsense, but I am surprised you didn't describe him as "articulate and bright."
@@raymondjackson6069 What DumbAss statement on your part, only racist thought or comment, has come out of your mouth. Humility is a virtuous characteristic for anyone to have.
@@bobkelly3944 Whatever you say Bob. You must be a white guy, because only a white guy would term anything racially defined as racist. Obviously, you don't know what racism is or how it is practiced, its effects, or ramifications, yet you live it and enforce it every day. You seldom hear a white guy call another white "humble". This is a characteristic when used by white men to describe the perfect negro - for you. You're saying he's tame, not a threat. He's a nice guy, he's a brilliant guy, but I would not call him humble. He's just a man. Relating much-needed knowledge, and let's leave it at that. I would say, if you want cultural enlightenment or understanding, take a black history course or something, but the BLMers have screwed that up royally. So you're kinda on your own, but you seem to be trying to get there, so good luck to you partner.
@Raymond Jackson You must have a lot of issues from your childhood or something. The "original comment" that you commented on ( not mine ,to be clear) was completely absent of any malice or condescension. To read anything other than respect and goodwill into his comments shows how misguided and warped your thought processes are.
@@bobkelly3944, aren't you virtuous. Look, I'm trying to school you, man. If you can't do that, you should just shut up. The more you talk, the more racist you sound in trying to explain away your latent and ingrained racism. You are a snide, self-righteous white guy, spewing those superlatives to make you feel good about being white, while all the time, marginalizing this man by describing him by an adjective that ignores his humanity, by highlighting his imagined (on your part) subjugation (on your part) to you (on your part). This is your way of taking ownership of this guy's soul. I am done with this, partner, and hope somewhere you can find Truth.
collet what you will, we understand
Clever!
@@mannys9130 Except I would bet quids he said collar - maybe it's the accent...
This gave me a genuine laugh
Your comment "with all the knowledge on the internet... one of you guys is gonna tell me what I'm supposed to put here..." instantly earned my like and this comment. Great video, thank you for your work.
You're living the dream man thank you for the great videos
You're my hero! Showing your misteaks/errors gives up hope that we are still human!
“They sell them for about $120, but what fun is that?” One of the many reasons I love your content.
Nice work! I also automated my dust collector and blast gates. I used the same dual action air cylinders and pneumatic relays, but made my own gates with a 1/4" plate of melamine housed in a 2x6 block. The nice thing is that these gates are self clearing. Then I used a PLC controller with IO modules. I added current sensors in my tool AC supply outlets. This allowed a tool on current detect to trigger the blast gate and turn on the dust collector. The bonus is that tool off detect will allow the dust collector to run for a minute to clear the pipes. You can make this all programmable with the PLC and get nice optical isolation to boot. Great videos, keep em coming!
I'm a software programmer and automation is the name of the game. Super cool, thanks for the video!
Systems Planet I’m an automation technician, and my favorite pastime is fixing stuff... so I beg to differ. 😂 everything I’ve automated so far has worked great, with two exceptions. Both things I made more efficient designs and wanted to replace anyway! Lol.
Automation can be awesome, but only when it works as needed every time without any issues. It has it's downsides in the loss of operational skills, thought on what you're doing, and in distancing the human element from the work you're doing. Some of us simply prefer simple and hands-on even if something 'better' is possible.
@@SystemsPlanet power
@@SystemsPlanet Yes and No. The problem with automation that is badly engineered is it fails during its lifetime. If you want to use your shop dust collection system without redesign or maintenance for 10 years then you need to design it to last 20. Using flimsy plastic blast gates with a 2 year life expectancy will have predictable results. Using quick wiring connections used for test rigs rather than soldered joints will have predictable results. Automation is just engineering, it has to be designed.
What I can see of this system is it's very well designed, and looks well engineered. Connections are solid, virtually no use of bailing wire or duct tape ... great job all and all.
Nice to see you so happy about a project that works.
I almost high-fived the screen when your new system came to life! I would love to hang out with you just for the sake of learning new things. What an awesome project.
About 40 years ago I came across an article in Fine Woodworking magazine explaining how to install a relay to automatically turn on the dust collector when any of my machines were engaged. Though I thought the $70.00 was a bit high ;-), I ordered one and installed on my system. It was a godsend and has worked flawlessly all these years. I have looked for an upgrade to install automatic blast gates, but haven’t seen a reasonable design…until now. The electronics my be a bit beyond my comfort zone.
You have a great channel, good content and very understandable.
I used to work in a huge industrial grade cabinet shop that had giant dust collectors. We had several fires inside the system and although we didn't prove they were started by static discharge, after we added copious grounding, we stopped having fires.
Whether you can prove it or not, it seems like such a cheap solution you might as well try it.
Yeah I've been shocked from my first CNC router dust collector hose when cutting plastic. Never tried grounding that one. At work we move starch through a plastic chute and it has a copper wire wrapped around the outside of it. No problems. Down at our sister plant that makes polystyrene beads and air-veys them into railcars, you will get a static shock that knocks you down if you touch an ungrounded chute while it's loading. Some shocking moments to be sure.
Yes, it happens in industrial usage, but there are no reports for home shops. The volume of air is not high enough
As Mr. Fielding said, I've never heard of a documented actual case of a static-caused fire in a home workshop. If it's really a concern, plumb your DC system with metal pipe. (Heavier gauge than typical HVAC pipe, which has been reported to collapse from the vacuum pulled by a DC system.)
can you run a copper wire inside a section of the pipe near the collector to get rid of the charge?
Love your videos. So meditating. You take me away from the everyday BS.
Keep doing what your doing and thank you.
The spline.
Ps. It's good to know someone as ingenious as you sometimes doesn't have all the answers lol(the sealant). Makes me feel better.
Men your videos are by far the best on youtube as guidance for anyone who enjoy mechanics woodworking electrical and do it all , you are very talented guy with selfrespect, thank you for you awsome work
A bunch of us guys out of high school and college put together a wood shop and made a dust collection system. Made it out of a leaf collection system (one of the walk behind units with a 8 hp gas motor) we used an electric motor and made a "cyclone" type dust bin with a detachable barrel...very convenient. That was in 1974. The availability of stuff was different and so was the ability to research how to do things. New ideas required a thing called the Readers Guide to Periodical Literature at the library. No internet back then. I taught myself quite a bit that way. To me it was like heaven when I could do my research online.
I really enjoyed your automatic blast gates. I made a simar set for my shop. I made the gates out of 1/4 melamine slider and a wood enclosure, with the same air cylinder and pneumatic switch you used. All in, less than $40 per gate. The self clearing of this design is a big improvement over most commercial gates. I added current sensing to each tool and controlled the gates and dust collector remotely with a PLC controller. This allows the dust collector to run for an extra minute to clear the dust in the pipes. The air compressor is also controlled by the PLC for full autmation. Happy sawdust to you!
Imagine a world where every teacher had your gift of personality and wonder. I wish we were neighbors
If he was my neighbor he would hate me. Probably think I'm trying to get with his wife, I'd be over his house every day lol
Ah yes don't we all dream of a Dream shop like yours. Excellent piece. and your expression of joy was great. Thanks for sharing. I just walk around and turn on switches .
I believe the reason why you havent been able to find articals on dust fires, is probably because the news rarely knows the source of the fire, only that a building caught fire. If the fire were to result in a substaintial loss of life and or proerty, then there might be some follow up. I personally worked in a facility that has multiple high speed CNC routers and a slew of other wood cutting machines, all connected to a large central collector. It caught fire every couple years, totalling something like 4 or 5 fires before we solved the issues. Dust collector fire prevention falls under NFPA 654 and grounding is part of the code.
Thanks for the NFPA reference. An even worse condition is created when PVC or PP piping is used for clothes dryer venting or paper dust from shredders. The static charge from air flowing through the PVC causes all of the dust and lint to be come charged and stick to everything. This causes buildup of fuel for fire. Always use metal vent material and provide good bonding and a ground. It is illegal to use plastic piping for clothes dryer venting for a reason.
It's very difficult to effectively ground PVC pipe and plastic blast gates. Grounding the system by attaching a wire to the PVC is not a solution.
The vent vent pipes on tanker inert gas systems are very susceptible to corrosion and static charge buildup. Bondstrand 7000M piping was developed to provide a glass reinforced pipe that was conductive and could be grounded. Flanges and couplings are conductive and can be grounded.
Bondstrand 7000M is not inexpensive, but is conductive. It is meant for industrial useage.
Overall galvanized vent ducting is probably the most cost effective choice. If you use a blast gate or valve that is made from a non-conductive material, such as wood or plastic you need a bonding wire to assure the sections of duct do not become isolated.
You're gonna hate that cheap plastic blast gate. Swap it out for an aluminum one with an open end so dust doesn't accumulate. Cool video! Thank you for sharing
3:00 When you use a puller, not only do you have to take care not to warp the impeller or pulley or whatever (BTDT), as you know, but you also have to protect the tip of the shaft that the puller screw is pushing on. In this case, a sacrificial bolt, or series of bolts that take the punishment of the tip of that puller screw.
Jeremy, I love your work and you have a great sense of humor. Keep doing this good stuff and teaching the rest of us that we can do it, too.
Well done. Really enjoyed your assessment and final result.
That is the right stuff. As a matter of fact when I worked with the inventer of a large (truck mount size dual motor) portable carpet cleaner for high rises, in order to seal the very high pressure and high temperature hot water fittings, we used silicone and nothing else. The difference is that when you rebuild it, much later, the silicone needs to be cleaned off whereas a gasket with sealer is a little easier. Thank you for the videos Jeremy !
Silicone is the go to solution for myself. Gasket sealant is good also. I love your videos
I am a plumber and shadetree mechanic. I cant see silicone being a bad option.
It is not like this is a high pressure pump... It will last for years, and is easy to reapply if necessary.
I love your reaction when it starts working. There is nothing better than that first moment when it all comes together. Thanks for sharing that!
LOVE your videos man! Thank you! Love seeing the real (painful at times) process, so I feel better. and yes, PLEASE do the video on the pneumatic components. That's something I'd like to learn about.
That static discharge is real as voltage will build up, but likely with few amps. In any case, grounding is prudent both for fires and keeping your other electronics from harm. Really like your channel, approach to problems and great, enjoyable personality.
I've been involved in a number of projects, of varying complexity. Solutions are arrived at incrementally, but... there is that unadulterated joy when long hours of thought and work come together in a solution that works... yeah, you captured that :)
I used relays not in the workshop (don't have one yet) but to automate switching the power supply of a 12v peltier cooler in the van between the solar panel + aux battery and the alternator + car battery. When cruising the cooler run on the alternator (giving the aux battery a chance to fully recharge) and when stoped the cooler run on solar power. So fulfilling to put your hands to good use 😋 Your work gives me a ton of exciting ideas for when I'll have a chance to settle down and build a shop. Keep up the good work 👍
I wish Jeremy was my actual neighbor! We'd have that tool-holder built by now ;)
I LOVE that you laugh about potentially making mistakes. It proves you are a worthy fabricator.
"So that shouldn't cause any problems." *foreshadowing
I was ROLLIN' when I saw that! That was hilarious!
Thank you for showing your trials and tribulations in addition to completed project!
Just a tip: it's likely you couldn't find the impeller you needed because B is a new rendition as a fix. They probably had problems with the type of shaft size you have on yours and decided to switch to a bigger one at some point. Here's the tip: instead of searching on what is an obfuscated view of real stocks, give calls to various outfits that sell these kinds of parts. Obviously, you'll run into more hassle than its initially worth it, but you'll also run into that person who will say "ah, yeah, we still have that part".
This tip isn't specifically for this blower, you did good with the shaft "collet", but what i'm trying to say is, sometimes the internet isn't exactly an exact portrayal of reality and it can cut off avenues.
All that jabble being said, nice project, certainly a cool approach to the old adage that if it's not easy, we won't use it.
As long as it's not the Ferrari dealer. Those idiots don't even know what a superseded part number is. They'll just say they don't have it and can't get it.
@@billybobjoe198 don't seem to have any problems with my Ferrari. 😂
With enough persistence and time unobtanium can be found. I dug up what may have been the last new ignition coil for my very old weedeater that way- it was an underengineered part and they all fail. So when I got the "ain't got any" answer I always asked advice on who might have it then followed up every lead. A year of looking off-and-on and I found it at a backwoods shop ran by a man who was once a big city dealer but retired to Idaho about the time it went out of production, taking all his inventory with him. The guy who mentioned him had once worked for him in the big city a thousand miles away and guessed that there wasn't much call for weedeater parts in a forest so he might still have one- and he did! Not only that, but he let me have it at the decades-old price too.
Someone somewhere has what you need in usable condition; you just gotta find them, that's all.
@@P_RO_ I admire your tenacity. Most of us would have just bought a new tool after the first couple calls.
I like it that you do things even though they are inconvenient. You do it right because it is right.
Something to consider with automation, once it gets beyond the desk, or bench, is safety. Not to be a troll, but when you do distributed things, like control a dust collector from across the shop, or from multiple places across the shop, it's worth considering how things are going to work in an emergency situation. EG, Do you want the dust collector to shut down when you hit the E-stop button on the machine?, and so forth.
With the dust collection gate, you considered spring loading it in one direction so you only need air pressure or some other effort source to move it the opposite direction. Another consideration is, in what state is the gate most safe, and would it be desirable to spring load it to this state, so a source of power is needed to get out of that state. When power is lost, control is lost, you get an automatic return to the safer state. I'm not advocating one way is better, only that it's worth considering when delving into automating things.
Hi Greg, I agree with what your saying totally. The Blast gate may be a very inert item to think about safety for, but that's where your head should constantly be when building automation into the shop. The Whole "What If" mentality. I have had some experience with home brewed automation failures that were quite costly which -finally- got me to think about the "What If's" before putting the system together.
I love what Jeremy did here and, let's be honest , even with no thought about safety, things will probably work out if something happened. The thing I think Greg and I are trying to get across is Having the mindset when you start into a project so that your thinking about those "What If's" as your going along. Ok, Rant off...
@@tgirard123 It's obvious you two work in industrial environments. Where I work, safety is drilled into your head. It's to the point I walk around in public, roll my eyes and cringe at all the safety hazards I see, even the smallest ones.
As a retired industrial instrument installer/technician, I have seen a lot of safety features added under the 'what if' scenarios. Most were instituted to mitigate losses due to human error in day to day operations. The rest were to stop losses due to actions beyond operator control, such as weather, power failure, mechanical malfunction, software failure, etc. After several years of gate automation experience, I have redesigned my own blast gates to compensate for such things as the loss of power or control signal/air. After adding positive stop position switches and a full chip drum or clogged filter shutdown, and just about all the fun is removed. Mine has an alarm for each gate with an LED start-up sequence to simplify troubleshooting in case there is a failure.
Shop/small garage organization. Stumbled into your channel, and loving your calm demeanor, smart and sensible approach.
Thanks for letting us into your shop.
There is not a person on Earth who hasn’t extended a zip tie with a zip tie. Great work!
I am a manufacturing engineer with BS in ME. he is indeed a great teacher. I wish i can handout with him.
"You could just buy one, but what fun is that?"
The dust collector fire I have never heard of in a small/home shop. I have heard of and seen the aftermath of a dust collector fire but only in very large manufacturing facilities where the collection system is pretty much 24/7. Extra safe is always best! Love your videos!
yay new vid
I like how you explain things. Also how you're smart and awesome.
The one realistic use case I've heard of for grounding is that it will mean less dust buildup (caused from static making it "stick"). That seems like a reasonable reason for grounding, but I'm thinking as short as your run is, it's probably not needed for that either.
Excellent video! Thanks for not adding annoying music like so many. You have a new subscriber.
Hey Jeremy, awesome work. I just use one of those remote switches. You have up to five units plugged in around the place (I just use one) and the remote is in my pocket. As for gates, I put some manual ones in but it doesn’t seem to make that much difference wether there are a couple open or not the suction does not drop off much. Maybe because they’re low pressure high volume.
Now, more importantly, take that final collection bag and throw it away. They do more harm than good because they have to let air through them they also let the really dangerous micro particles through and it’s the micro particles that get trapped in your lungs and stuff them especially if you’re cutting/sanding MDF ect as the glue dust is dangerous. I see the way yours works most of the dust goes in the drum but those super fine particles don’t drop out of the air flow and pass through the bag. I use a drum like yours but I got one with a removable lid and fitted three truck air cleaners to the lid so all exhaust air passes through the filters. You could put a drum with filters fitted where you originally wanted it in the corner and connect it to your outlet from the vacuum via a hose. The best way is to have the final outlet outside of your workshop.
There is now a lot of information on the internet about woodworkers and the dangers of fine dust particles. Please consider reading about it and possibly warning your subscribers. I’m not a safety nanny but this is a real issue with potentially deadly results over the long term.
Cheers Stuart 🇦🇺
WOW! You are amazing. Most videos make everything look so easy but you show how hard it can be, Thank you for the education.
Unless you are dealing with dust on the scale of a few micrometers, the very limited energy of a electrostatic discharge should not be enough to cause ignition. The dust concentration in the pipe is also fairly low, ignitions will very likely not develop into a dust explosion.
I can tell you the static generated by my dust collector is not low energy if im doing a process that generates a large amount of particles for extended periods. Obviously Im not grounded but I'm considering adding some sections near high touch points just to eliminate those jolts.
I swear ive been hit by discharges 3-4 inches away, and while not particularly dangerous, is really annoying.
I just ran some aluminum tape on the outside of my pipe from the dust collectors case, to the end of each run. Also put it around the connections for extra sealing. Eliminated all of the static and increased the suction for a small price and very little time!
He's right about the particle size. its also a concentration issue. you need to reach a minimum concentration in the air for it to be explosive, same as grain dust. if you clean out the collector regularly it should be low risk. the catch bin is where you have the greatest risk because the air flow through the pipe would make reaching critical concentration difficult.
Real clean job. Spring return cylinders would save money on both the cylinders, and actuating solenoids. Thanks Jeremy.
We had to add a ground strap that sits in our dust collection bin, in the saw dust itself. Not because of the fire hazard, but because the static will jack with our CNC router computers.
The dust collector was my Machine Design Project, wish this existed then! 😊
so, while i haven't had static start a fire, I can definitely confirm that dust against plastic can cause some very serious charge buildup and arcing. I had an issue with my CNC machine where during a really long job all of a sudden the machine would abort with a message like it hit one of the end-stop switches. But it never did. Turns out, arcing from the dust collection was causing such a big EMI spike that the microcontroller reading the switches picked it up as a switch throw. So, in the interest of your CNC machine, and the additional safety of protecting against huge charge buildup, i'd go ahead and ground those pipes.
I always forget that arcing causes EMI as well, and it doesn't have to be that near to affect devices.
How does one ground Plastic? As a former electrician (20 years ago) we would bond/ground the metallic parts by running a jumper in parallel with the plastic part (seal tight for example) and bond the connectors. Although the plastic seal tight with plastic connectors was never bonded.
Grounding it all is definitely worth the effort.
I was running some lumber through a drum sander, and kept getting "burned" by the chassis. Eventually figured out that the friction of the dust on the collector hose was generating a HUGE voltage differential, and I was the only path to ground when I got too close. I was going to add an arduino-driven dust gate and run a signal wire back alongside the pipe to the dust collector's relay-driven power switch, but would want to REALLY ground everything to avoid having the circuit board fried when the input pins suddenly jumped to 700v.
@@Reign_In_Blood_963 most effective way would be to run a conductor along the inside of the pipe in contact with the interior sidewall since that's where most of the static charge is and gave it an exit somewhere near a grounding point.
Alternately if the system already exists, use some kind of metal strapping (like the stuff with the holes all along its length) and screw through that at intervals all the way to the interior of the pipe to conduct the static charge outside.
Strictly speaking you would need several conductors around the circumference of the pipe to maximise static reduction since the plastic pipe doesn't efficiently conduct charge around it's surface.
In a home setup it's unlikely to generate enough static to a significant risk, and the duty cycle would probably give sufficient time for the charge to self dissipate anyway.
Superb shop and the dust collector was an excellent project for your safety. Well done Sir !
I love how you still have that 2hp motor on your miter saw!
Also if you don't mind my asking, where do you get your pulleys from? I have a ton of motors that I would love to drive by belt and see how they would function as generators. But I got to get some pulleys for that, and I'm uncertain where to get them.
I've gotten them from Grainger before. Grainger is usually very high priced on many things and they charge a premium for having stuff in a "brick and mortar" but their die cast zinc pulleys for v-belts were actually priced competitively.
There is a video on that saw somewhere...oh, was the video right before this: ua-cam.com/video/gMVIdDKgG5A/v-deo.html As for the pulleys, I think he uses a lot of salvaged parts like treadmill motors and such that have them, but you can get some on kinda cheap from ebay, or if you're not too picky on the sizing, a u-pull-it auto parts yard can get you come on the cheap.
I have a local store that sells pulleys of various shapes and sizes... (Tractor supply) ... If I need something that they don't carry... then I order from McMastercarr online.... Northern tool might also have what your looking for...
I've been away for a while. It's so nice seeing you in a roomy shop. I enjoy watching a younger man having fun in his shop. Thanks for the video.
What about using a plumbing offset, if one exists in that size? Like a toilet offset closet flange.
It seems like there is a lot more personality in the video, than in older ones.
I like it this way. It takes an otherwise dry subject. And turns the video into an engaging exploration of it.
Look forward to your next video. :)
Nice work! fancy coming doing ours next haha
Nicely done, sir. I wish I had understood the importance of clean air, and what dust can do over the course of a lifetime.
Good on you.
I was in a place that was using PVC to move air at a fairly high velocity. The maintenance guy was very proud that he used PVC and everyone else was using steel. He too was using a gate guillotine valve. Anyway, the day I was there it was particularly cold and when the air was flowing everything was fine, but when he shut the guillotine valve, nearly all the PVC shattered at once. No one was injured, but given the shape of the shards and the violence with which everything shattered, it could have ended badly. I have also witnesses a giant HVAC duct collaps because one damper closed while the other remained open. Air has mass and it does surprising things when it stops suddenly.
Your volume of air is less, but he was using SCH 40 and you are yard drainage pipe, which has a wall thickness that's 3x thinner than SCH 40, for the 3" or 4" diameters. You may be fine, but I thought I would offer you a word of caution.
It should be fine in his case because he has plenty of non-glued joints and very large diameter pipe. An overpressure event of even 1/2 atm would produce ~90lbs of separation force to every unglued joint, which should prevent any serious over-pressures by simply releasing them into open air.
@@avialexander
Without knowing the air's velocity, volume, temperature, and %RH, in addition to how quickly the valve is shut; you can't know the developed pressure or the shock it would induced into the system.
I stand by my potentially over-cautious warning. But, I doubt anyone can tell video guy that his system is safe, and have numbers to back it up.
Also, he said that he wasn't using SCH 40 pipe, he was using drainage pipe. This is usually SDR35 and unlike solid walled PVC, it's aerated PVC, kind of like a foam. This pipe is strictly for unobstructed drainage, it has no pressure rating.
Shock happens faster than the non-glued joints can slip apart.
@@cornpop7805 Interesting points. I'm a CFD engineer, so I know nothing about PVC pipe. What I do know is fluids. And shocks travel at the speed of sound, which in air is 1125 fps, and if you want to ignore effects of compression, divide that by three, so ~350 fps. I'd estimate his duct system's longest branch is ~35 ft, which means that the pressure equalizes in the entire system in 0.1 seconds or less. So to get a pressure spike, he'd have to close the gate in 0.1 seconds. In the video that's not the case, but it could be done. If you wanted to evaluate it at that speed, then you'd have to start using those properties you mentioned as well as dynamic compression effects. I'm sure there's a table somewhere to do it quickly.
@@avialexander
I mentioned this in my original post, but I've seen SCH 40 PVC pipes shatter and giant duct work crush, both due to the introduction of a complete and sudden restriction in air flow. Both times, someone could have been killed. I'm not saying that I'm sure that the piping system in the video presents as much danger, but the pipe is thin, weak, and unrated. That's a large enough motor and impeller to make me think the air has meaningful velocity. We both know that F=MA and air has mass, as does the debris. I woudn't feel right to see a similar setup and not offer a word of warning.
It would be interesting to figure or test this system out. I've done some CFD and associated R&D. Fluid dynamics is a pretty complicated subject. It certainly takes a properly parameterized model to give you reasonably good results. In order to prove the software worked well to our owners, we had three different engineers (plus the CFD seller) working seperately to model the same peice of somewhat simple air handling equipment. We had lots of real pressure and flow measurements - plus video of smoke tests for the equipment, but all we got to work with was the fan specs and the geometry of the equipment. None of us came up with similar results to the real numbers. So, the software failed our owner's tests. We did further testing, where we ended up creating several simplified versions of equipment, then parameterize the models to match reality. We eventually came up with parameters for each architype, to use in similar cases. Without that feedback, our CFD software wasn't as good as our experienced guesswork. Even the software company's best engineer failed to create an accurate model, without some real world feedback. The systems we were building were no more complicated than a residential refrigerator. I started cheating and created dumbed down models of our equipment, this helped the software perform better. It really threw it off to have small complex interfaces and tight corners. My simulations also ran in a couple hours, rather than 10 or 12.
could put a delay on the blast gates
These videos are so good to watch. educational, and fun to boot. When you have fun, I have fun. Keep going.
you know what Jeremy, more than the excellent video contents. i like your face and voice. Both are supremely pleasant and have an important contribution in all the videos you make
My gosh, your knowledge on multiple subjects is astounding to say the least. Fantastic video sir.
That was an excellent narrative of a true engineer's journey, how they'd approach a problem and play whack-a-mole to each problem along the way. Thank you for that, Jeremy. And congrats on getting it working!
Love your attitude
No problems only solutions
Something to watch out for would be the channels of the blast gate slowly building up with material, and eventually, not closing all the way. I'd keep a stiff wire handy, and make it easy to remove the hose, so you can dig out the compacted debris every couple months. I learned the hard way.
Thanks, and great videos.
I always love it when you say 'that shouldn't cause any problems'... :-)
I sure wish you were my neighbor. I'd let you take over my barn for projects and just watch and learn. I love your attitude. Thanks or the great videos and shared knowledge.
I've been an explosives expert for 18 years. If you have to add a grounding wire to your dust collection, you need to add one to your powdered creamer (yep, it's flammable). It all has to do with flash point and the heat of a static charge that occurs through time. Yes, it is possible but so is getting zapped with lightening 32 times during one storm. Possible but not probable.
BTW... I love this video (and the others). I like the way you talk like you don't know what you're doing but your big brain is answering questions your mouth hasn't asked yet! LOL Keep up the good work.
Man I wish you were my neighbor !!! Thank you sir I really enjoy your videos
Thanks for a great video. Your enthusiasm is inspiring
Hello, I just finished a very rudimentary auto turn on, and shut-off for my dust collector. The basis is a current sensing module, with the donut hole. I intercepted the shop heavy 20 amp tool circuit with the module. Anytime a tool is turned on, it goes through the current sensor, activates a relay, turning on the dust collector. That's 2/3 the equation, the last third is operating the blast gates, which is how I found your video. You're brilliant, keep up the good work!
You have a very relaxing and reassuring presence.
Found your channel from Matthias Wandel's recent recommendation. Can't believe I haven't found it earlier. Right up my alley with the engineering/woodworking content. Subscribed and will watch your older videos.
The most elegant system for grounding the PVC tubing, and for at least peace of mind... Run speaker wire along the outside of the ducting, and every so often strip back and wrap/connect the bare wire part to a pointy screw that passes through the wall of the duct and into the air stream. Ground the end of the wire... that's it.
Awesome video. I really enjoyed your approach and attitude when solving problems. So great how you roll with the punches and keep smiling when things get frustrating. You made me laugh while watching this because I have had similar experiences and all you can do is roll with it. But rolling with it while maintaining a great attitude is so refreshing to see. Keep up the good work and thanks for marking that 13:46 count in my life.
Jeremy you are my hero. I like the way you think.
I admire your ingenuity.
Great video. The best part was your reaction when you tested the setup and it worked! Thank you. Keep up the good work. :)
So cool! Par for the course with you. Thanks again.
I like the way this man thinks. Need something make it heck yeah
I'll automate more after watching your pneumatics video. Great work thanks
Brilliant!! great job. I had no idea this automation could even be done.
Wow. your nerdiness is next level. Awesome job.
Your a very happy person, a great enthusiasm, a very good teacher and very skilled. Thank you.
I have a project of rotation through 3 tools in only one space but must be rotated vertically.
Wonderful entertaining video. I'll be coming back for more as I get closer to the same issues. Thanks!
Hi Jeremy, like what you did with the dust extractor system. What I am planing on doing with mine is having a wall mounted cyclone primary up high with the dust shoot flowing to a sealed barrel and the air outlet from the cyclone going onto the blower. The blower outlet will have a filter/outside bypass. I'm planing to use a current activating relay to turn on the dust extractor. The good thing with this set up is it can be wall mounted and save space in your workshop.
I wasn't too concerned about my shop catching on fire but I grounded mine and now I don't get shocked. I used to just get zapped every time I moved with the darn thing prior to grounding. It's much more pleasant to use now.
NIce piece of engineering and application; well done.
Dude, your awesome and you excellent communication and instructor talent, nice work .
Love it. I was an industrial electronics tech for years. Joke was anything with more than 5 color wires was mine. Love how you take things down and build them up better after a lot of thought. Make in ‘improvement’ and back up when it don’t work. God knows I’ve been there.
Your joy is contagious, love the project and explanation!
Love the smile on your face when things work. Congratulations!
I get the same feeling when something works! I love his reaction and I love his intelligence!
Excellent project in so many ways. I enjoyed your approach to the automation elements and the production quality is first rate!
I made something like this a couple years ago! My gates are 3d printed and actuated by little 5v mini servos, and mounted to that same type of pipe. The cool thing about the servo is that I can open different gates partway if I ever want one area to run at less than full blast.