Don't buy a cyclone dust collector? Use a cheap dust collector instead!
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- Опубліковано 28 чер 2024
- No cyclone dust collector, no problem! I'm really just joking -- I would love an expensive 5hp cyclone dust collector, but I am sticking with my basic 3 HP grizzly dust collector for now. But what about all that dust that is bad to breath? Things under 2.5 microns are super bad for your lungs and can cause cancer. Those typical filter bags only filter down to 2.5 microns, so you are breathing the worst dust with those type of systems. I set out to improve upon it by putting mine in it's own closet, and using a fine grade filter.
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I built this dust collector closet for around $100-$120, but that is because I milled all the wood myself from downed trees. You could probably get all the wood for a few hundred dollars, and finish the outside with some cheap 1/2" drywall, and still get the benefits of better air inside your shop. The filter was probably $20 or so, but I forget at this point.
What do you all think? Is this a good idea or a terrible idea? Let me know in the comments!
The only materials I bought were the insulation, and the purpose of the insulation was to make it quieter, and is somewhat optional. Sometimes my CNC is quiet enough where I don't feel like I need to use hearing protection.
I still will have to wear my dust mask a bit; my CNC machine kicks out a lot of fine particles when I'm not using my dust boot.
I did measure the dB of things using an iPhone app. With the doors open, I see about 78 dB when pretty close by, and it drops to 72 dB when the door is closed. In the middle of my shop, it is around 67 dB, which is a normal conversation noise level. It's best to avoid prolonged exposures to over 85 dB to avoid hearing loss. I feel pretty confident that the noise level is now low enough where I can leave it running and not worry about hearing issues.
Corbin Dunn
www.corbinsworkshop.com // CNC files, products, portfolio
www.corbinstreehouse.com // Corbin's Treehouse Blog
Chapters:
0:00 Intro and Dust Issues
0:33 Other Options
1:25 My Solution
2:18 The build
5:05 Insulation
5:37 Conclusion
#woodworking #cncwoodworking - Навчання та стиль
Get a super dust deputy, or XL, and add it to your system. 2 stage collector is better at separating dust and thus takes longer to clog your filters. When your filters start to load up, the motor has to work harder, then your air flow starts to decrease. Also, why only one of those furnace filters? More of those filters mean more surface area for air to flow through, lower velocity, and take longer to load up.
Whoa, I think I will get an Oneida Super Dust Deputy - that looks like a great solution without a lot of additional cost! I wish I would have thought about it before I built the closet...I may not have enough room to do it, and might have to rebuild it. I did quickly mention how much better a 2-stage system is, so I agree, it would help a lot! I'll probably run with this setup for at least a few months and see how it performs.
I only used one 20x20 filter because of cost and simplicity. A 6" dust port has an era of 18.8 sq in for input , whereas a 20x20 filter is 400 sq in for output. I figured that would be enough...but it is just a complete guess -- I didn't do any flow studies, but now I'm thinking I should have looked into that. It would be easy to add a second one.
I'd suggest replacing that 1" filter with a 4" one (better flow and you don't have to swap it as frequently).
I'd also suggest taping all seams (dust will travel the path of least resistance).
Test temps inside after long run times, but I'd bet you are okay.
Alternatively: K&N now makes "washable" HVAC filters. I own one for my large bedroom filter. They only offer them as 1" thick, so you would still need a higher rate of cleaning frequency than a 4" would offer. But at least it saves you $15? a pop.
Thanks Josh! I did caulk all the seams, but I haven't done anything about the door corners. I was thinking of using regular door foam to get it to seal better, but I might just try taping it. I'll keep an eye on the temps; I'm thinking it won't be an issue.
I'll look into some other filter options - I would definitely prefer something that is reusable.
i did a similar thing on my cnc, i had a small 1 HP floor mounted collector, i hung it on the wall, built a box around the outlet which is just discharged into a bag, and added two flat hepa filters on the side i got for 30 euros each from amazon in germany, then i made a thein baffle on top of a carcass to go in front of the inlet and catch the dust in a large bucket placed inside with a really snug fit, it works great and my system is only just under 70 db in volume.i figure i will only have to take the box cover off and empty the bag every 3 months or so. i couldnt see the point of having a quiet spindle only to have a screaming dust collector in the same room, and i reckon i saved at least a grand.
Awesome! You (and Josh) now have me thinking about getting a better grade filter -- HEPA filters are good for 99.9% of dust. I'll look into finding one of those.
Corbin, thanks for the systematic approach to this. I assembled a 2 stage DIY cyclone by repurposing a harbor freight one stage like yours but I still get the fine dust accumulating throughout the shop. I would be concerned with heat build up with fine dust particles as a fire hazard so keep an eye on that.
Thanks David! I'm definitely curious to find out if I still get a lot of fine dust buildup. I'm also thinking about modifying mine into a 2-stage to see if that improves things. I'll definitely keep an eye on how hot it runs.
Put some drywall over the foam. Huge improvement and cheap.
On the inside? I was going to go with drywall on the outside, but used wood simply because it was "free". Drywall is pretty cheap...I could add some on the inside to make it quieter, but right now it seems good enough based on my dB readings.
Great topic to confront and share in this public way. Lots of good, constructive feedback already. As others have voiced, my concern is fire.
Thanks! Yeah, I'll keep an eye on the temps for a while -- particularly in the summer. It's around 60F in my shop right now (heating it), and in the summer it gets up to 70 to 75F.
@@CorbinDunn I'm mindful not just of temperature, but a fine particle-ladened air mass containing electric motors > potential ignition- something not reflected by thermostat reading.
@@mavigogun Good point! I did have this same dust collector in a closet at my old shop for probably 6 or 7 years without any issues. I know a lot of people are cautious about using PVC for their dust collection pipework...but I don't worry about it. (IE: static issues)
Awesome idea but won't your dust collector overheat in the closet ?
That's a good point! I hope it won't, but I honestly don't know. I'll keep an eye on the temperatures as I use it, and report back in a month or so.
I am figuring it won't overheat because the motor has a fan attached to it for active cooling. There is also air still moving in and out of the entire cabinet, so it won't be stagnant air, and will be constantly replaced. That's my theory at least...
@@CorbinDunn no problem bro all the best
I got an Airgradient sensor to monitor PM 2.5 (and CO2) in my shop, and was surprised to find what affects the air quality. It’s a good way to see what works for your setup.
Whoa, that is cool - I had no idea those existed! I think I should get one to track how well it is working. Thanks for the idea!
I ordered a PM2.5 monitor....we'll see how my air is!
How effective are ionizers at charging fine wood dust and making it collect on surfaces? I know they're usually indicated for getting rid of airborne pathogens and smoke particles.
I don't know! I'll have to look into it...but I do know the size of the fine particles of dust that are the worst for you are in the 0.3-1 micron range, which is similar to smoke particle size.
@@CorbinDunn If you get a couple of ionizers and some grounded galvinized plates positioned hear that outlet filter, you'll probably find the plates gathering material at decent rate right away.
foam insulation for sound deadening ?
That was my thought...did I totally mess up by using foam insulation? I didn't test the dB levels without it, so maybe it was a waste of money.
6:52
What is the point in making this video when you're not even sure it's gonna work in the first place. It's nice and all that but does it work?? Well, we don't know...
Hah, good point! Well, it does work; it is quieter and it dust reduce the dust. My question is how much will it reduce the dust. I still think the closet is a good idea even if it doesn't work well enough to eliminate dust, but I think it will.
Someone mentioned a quantitative way to measure this: Use a PM2.5 sensor! I ordered one...I'll update my description with what I find out.