My dad was a pipe fitter most of my life. He worked in a lot of chemical plants with some really bad chemicals. What he used to do, if it was metal-to-metal contact, he coated it with anti-seize. Not only the nuts and bolts but the motor shaft and the hole for the squirrel cage as well. After he was done, he would cover the bolts and threads with a heavy coat of grease and then spray paint them. The paint would dry and protect the grease so it didn't get nasty or get everywhere. When it was time to work on it, he simply wiped off the painted grease and the metal was the same as it was when he first started.
I can’t wait to see the squirrel cage residue material refining. I don’t recall ever seeing you do a video about that before. It will be interesting to see how much precious metals is going up and out over the years of use you put it through. Of course that is just what got stuck and only represents a portion of went up and out. I’m excited for this one for sure.
@@sreetips oh, I kind of thought the motor dying so soon was a little odd. That makes sense then. I’ll have to take a look for the refining of the motor scrapings. I don’t remember seeing it and I’m pretty sure I’ve watched all your videos. I probably saw and don’t remember it.
@@djcbanks the video where he included the scrapes from the. Fume hood is one of the videos where he refines the filters from his refining. Not the most recent one but from 2-3 years ago. I watched it very recently. I don’t know how to link but it’s dated March 2020.
I’m actually impressed that the motor lasted this long. A year or two ago I said this inexpensive Chinese motor with bronze bushings will have a “Short noisy life” yep 👍 I hope this one lasts a long time for you sir. Thanks Sreetips ✌️PT
Hi, I've always been curious about your fume hood, I'm glad you shared a video of replacing your fume hood motor, and I'm looking forward to the video of gold recovery from the dust you collected from the fume hood motor. Take care, golden man
Excited to watch the dust refining video! The stock pot, paper storage, carpet cleaning, etc... are my favorites! They really demonstrate how much value would be thrown away if not salvaged.
Our company had three fume hoods in the lab and I was in the maintenance department so we did all of the work on the hoods. We did the same thing with all internal attachments and covered them with silicone. Our front doors were glass originally and we worked with a lot of HF and Nitric and the HF fumes would etch the glass in the front windows and frost them so the lab chemists couldn’t see brought them. We removed the glass and installed plexiglass windows and had to take the counter weights that were in the walls and cut them down so they were close to the lighter weight of plexiglass compared to the glass windows. We also bought our blower motors and squirrel cages from Grainger.
You're quite the maintenance DIY'er in addition to your chemistry skills. Good job! You might ask Grainger if they can source you a better motor. Dayton makes good motors, but the sintered bronze bushings commonly used in motors that size are destined to fail. Although if you're replacing the whole thing the next time it fails, I guess it doesn't matter.
I’m addicted to your videos, so very interesting to see the chemical processes of refining precious metals. I would have never thought this is how it is done as I am not into chemistry but I also see it can be extremely dangerous without the proper safety measures which ventilation is one big component.
I would just like to say, with the quality of many UA-cam videos today, it’s easy to forget while watching your videos exactly how much work you put into editing your videos, putting information on screen for us so that we understand what is going on easier- and sreetips, I want you to know that your videos and the amount of work you put into filming and editing etc is very much appreciated by us. Especially your gold and silver recovery videos. Thankyou very much, you have made a brilliant channel. From Scotland, 🇬🇧👍
This was an extremely informative video, thank you for documenting the repair process (also narrating overhead work)! Perhaps when you retire the current hood, you can do a video on pros/cons, features, or any modifications that you've learned are practical for continuous fume hood usage. Many thanks!
Great to see you back up. Thank you for telling us about the backwards set screw. I thought I caught that out of the corner of my eye, but wasn’t sure.
Ok, now I just want to see a fume hood residue refining. Refine the cardboard. 😂 But seriously, I love your videos - never miss one. Keep up the good work!
Hey there friend! Next time you replace the motor or if you feel like it I would suggest opening the hood up and using a scotch pad or coca cola to remove the rust on your hood interior panels. Then get some high temp spray paint and spray it to prevent any future rust. It will extend the life of the metal hood.
old fellows need the closed captions. i do enjoy your show but with hearing issues if i turn up the volume "Mama" complains, so i need the closed captions, thanks from the deep south, New Orleans.
Adding a filter screen would be just below it, would help, if you believe it's catching precious metal partials, because, even lighter particles are being blown outside, it may be overkill, but you know, all to well they all add up, if you collect & save it.. Also adding a screen could prolong the life of the motor too.. Just an example we have a good air filtration in our home, I placed a 20" X 20" hose air filter in the back of a box fan and every month I replace it, it catches way more dust then I thought. As a plus, my wife & I also, now have -0- indoor allergy problems.. Sorry for going on so long. My point is, if you do find precious metal partials in that dust, just think what an added filter might recover.. I find your videos to be very educational & entertaining, so much so, that my wife & I are going to do more research and try it, after experimenting in very much smaller tests.. I am a skilled knife maker, so I do understand extensive safety procedures.. Thank you very much for sharing, even these smaller tasks..
That segment of the silver was really cool to watch. I bet people would love to watch another short video of the camera zoomed in even further. You could use royalty free music as well to keep it entertaining.
Maybe you should put some anti-seize on the motor shaft before you install the squirrel cage fan, and after you do that put a little silicone on the end of the shaft to keep fumes from creeping up the shaft and corroding it seizing up the fit for the next time you need to replace the motor.
just an idea to make the sealant of the screws a little easier to remove. Just put some tape over the screw and apply the sealant to the tape and a bit to the surrounding area. The tape is easy to remove and the sealant prevents the tape from disintegration and seals it airtight. You should be able to remove it much easier and also pretty clean.
Good video its probably worth getting a metal core filter like for Air con to keep the dust off the rotor, the dust makes the rotor unbalanced and the unbalance messes up the bearings, the motor bearings are probably just the cheap vacuum cleaner bearings if they are proper bearings, if they are sintered bronze they wear because of dust and the heat drying out the felt oil washer and if you can oil them with a fine oil like sewing machine oil they can last a very long time, the mix of chemistry dirt and fumes won't do the motor any good, ventilating the motor compartment to reduce the motor temperature would extend its life a lot of the area is sealed, the motor type is a squirrel cage induction motor from the interlocked wiring in the stator, the motor shaft has a shorted wire turn and tries to catch up with the magnetic field rotating in the winding, it gets quite hot and causes a short motor life
Incredible, I work with fiber glass and polyester, I also use this kind of extractor, and it just stopped to work yesterday because of too much glass dust, motor burned...Thanks to you I'll certainly fix it^^
me sitting in my lab with my mask on, thinking about how i could build a fumehood myself. 1sec later sreetips: replacing my fumehood motor my mind: xfiles theme starts playing
All motors being equal, my evap cooler motor lasted 20 years, had it rebuilt in 1975 and it's been working great no problems ever since . Of course it gets oil in the bearings every year. But compared to modern junk that we pay 3× the price of the original motors only last ⅓ of the time . To all the youngsters out there: Once upon a time tools and equipment were built with pride and built to last as long as possible. Stuff didn't always wear out and break every few years .
Wow..... Its been 2 years since the last swap... I remember all the problems you had with it. Think it was 3-5 videos long.. that was one time I seen you politely get upset about something,..it was starting 2 adjitat me... fantastic video Also I know its hard 2 reply 2 all your comments but for having 200k ish subs your pretty good.. its nice 2 know my comments arent overlooked.. thank you kindly good Sir.
Also be careful of the fit with an adjustable wrench. One it can round off the corners of your pull shaft secondly your knuckles are worth more than the squirrel cage. They call those adjustables knockle busters for a reason.
Nice Job Sir. If it was 2018, I think that was 4 years, not 2 years.... I'm a little surprised you don't run filters.... I mean yeah, you'd have to change them all the time... But the volume of material that accumulated on the squirrel cage... I'm just speculating, but that could be ruining your motors....
Great video as always Sreetips.. you should get in front of the camera more often as you are a good looking guy! Thanks for documenting and posting this update.
I was thinking about how I'd design ventilation for a fume hood, and it seems to me like there'd be a huge advantage to pulling out acid vapors with a venturi.. where the vent exits the building, use a foot or so of 6" or 8" chemically inert vent pipe, horizontal. (make this a size bigger than the blower). Attach a same size tee fitting, with the tee top horizontal and the spur facing down. Then, a reducer down to the blower size. Pass a blower size pipe through the tee and maybe 3" into the horizontal exit pipe. Connect the blower to the last pipe. Connect the blower inlet to an outside air inlet duct. Duct from the fume hood to the tee spur. The blower will be up in the attic or on/near the ceiling, (less noisy, and away from arcing in the motor), pushing outside air through the top of the tee, creating a draft in the spur duct to pull fumes out of the hood. If you don't supply an outside source for blower air, it'll draw (possibly heated) air from inside, lowering interior pressure slightly and reducing draft performance. If you were to use your current fan for this, turn it over so that inlet air is pulled from above.. the inlet suction will support some of the weight of the squirrelcage fan and motor armature, reducing load and wear on the motor bearings for longer service life.
@@sreetips Of course.. the very next video UA-cam showed me, featured your first refining in your "NEW fume hood", making all of this obsolete to you, but maybe still useful for a viewer..
If I have to replace this current hood, I’ll probably get a 500 gallon poly tank with a six inch round on top. Cut the front off for access. Then install an air eductor for the air movement.
I'd love to see what yield you get from processing the dust and stuff from this!!! Also, they make plastic flat razor scraper things for cleaning windows, might make removing that silicon easier.
is there any cooling air on the motor if not that may have contributed to the bushings prematurely falling other wise id suggest a once a year cleaning of the impeller blades with some kind of solvent but just my 2 cents
G'day my friend hope you are well? I'm pretty excited I've started to process my 15kgs of sterling silver. I'm very happy the first kilogram bar I made yeah?? But I kept it as it's something to remember lol but I've produced 4 kgs at present of some very nice silver. It's sadly not 99.9 but it's 99.6. yeah just gotta be little more patient. But all your references have truly be huge fun. Thanks buddy hoping to get another at least 8kgs I'll be hugely happy. I'd payed no more than $500 AU just finds at opp shops and so on. Enjoy Life my friend. Patrick western Australia.
IT SEEMS A LITTLE BIT LOUDER THAN THE LAST ONE. YOU SAID THAT YOU ARE GETTING RAIN WATER 💧 COMING DOWN FROM THE EXHAUST PIPE. MAYBE PUT A STAINLESS STEEL CAP ON THE TOP. HOME DEPOT CARRIES A UNIVERSAL CAP FITS 6 OR 8 INCH PIPE.
When he was scraping the gunk I jokingly said to my self hit that dust with some nitric acid. Never mind he actually swept it up see if there's precious metals in the dust.
Hello sir, I just made my first AP solution (HCl, peroxide) and put 200 g of gold fingers into it yesterday. Normal goldfingers foils float like charm, but some ancient russian goldfingers are still resisting. I let work it for few days. No bubler yet, I do not know, if it is needed or just "nice to have".. Your fumehood is like my car, that has more than 500 000 km (310 000 miles), last bigger service, see, what it lasts and get new then... 🙂
mr. sreetips says ...process in a later video... me in my mind: ...killed the radiostar mr. sreetips: killed the power xfiles theme starts playing again
We could do a little parody of sreetips catching bugs , ants and roaches around and in his work area , then him saying that they may have some precious metal dust on their little feet and he will process them at a later date .
Good video Mr. Sreetips. There is something about "mend and make do days" that make you feel good isnt there ? Better to do it yourself than pay hundreds of Pounds (or in your case Dollars) to get someone to do it. I would be very interested to see if there are any precious metals in the sweepings you recovered though, if there are it just goes to show how easily lost these things are during processing.
@sreetips can you do a video of the metals in non solid form to see if they would set off a metal detector ? Gold sponge,silver Chrystal , cement silver, gold and silver in solution etc. It's something I always wondered
Being an auto mechanic and my pay is directly proportional to the time it takes for me to do a job ( flag time ). Buying power tools will literally pay for themselves in weeks and sometimes days so please forgive me Sreetips if I cringe a little @ 2:41 watching you struggle here with that screwdriver 🤣
Shut down twice per year, get your timed maintenance done on all you equipment. Keeping it all clean, greased an in good working order would be the ticket
I know you replace this every couple years. Just a cost savings. Grainger is fine, but I bet your local big box store has the very same motor in stock for much cheaper. Check attic fans in the roofing section. I can say I got that exact motor from HD two months ago to replace my failed attic exhaust fan motor.
Speaking from much experience, Dayton motors are not high quality. Look to GE, Baldor,Mitsubishi, or another brand. You pay a little more but the reliability is there. Great video BTW.
Have you thought about trying some high temp silcone spray? Or something more spray paint like that would coat the bolts but make then easier to remove in the future?
I have a question about tungsten silver contacts. Have you ever processed them? I watched another UA-camr attempt and have a lot of issues. Another reason I ask I'd I found a place for the alloy contacts, cheap.
It is outside of the purview of your channel but there has been lots of talk about lithium battery recycling recently, it would be interesting (to me at least) to see you dissolve a lithium battery in acid and recover the aluminum, copper, lithium, cobalt and tin.
Lithium is realllllllyyyy reactive and finicky. It's poisonous, , and burns easily enough in air that, Like it's siblings sodium and potassium, it has to be stored in a hydrophobic substance. Lithium is so light, though, petroleum jelly is used rather than mineral oil.
I recently had to "fix" my fume hood fan blade, one of the fins had recived a healty does of corrosion making the fan incredibly unbalanced. I cut all the tips back to match the shortest. problem solved....for now lol😅 Side note: what exactly does stannus chloride do? I know it's used do testing for gold but I throw a couple drops straight into my solution with some SMB and basically was ably to skip a couple steps by precipitating the gold without denoxing/balancing PH. is this a viable technique or is there a serious problem that I'll come across down the road? also thank you once again for the videos you put out, I'm extremely close to being able to refine gold from start to finish. just need some legit melting dishes!
I use stannous chloride to test my solutions for the presence of precious metals, what metals are present (they turn a different color for each type of metal I have in solution). And the relative concentration of the metals in solution. But I’ve never used stannous to drop metals out of solution:
My dad was a pipe fitter most of my life. He worked in a lot of chemical plants with some really bad chemicals. What he used to do, if it was metal-to-metal contact, he coated it with anti-seize. Not only the nuts and bolts but the motor shaft and the hole for the squirrel cage as well. After he was done, he would cover the bolts and threads with a heavy coat of grease and then spray paint them. The paint would dry and protect the grease so it didn't get nasty or get everywhere. When it was time to work on it, he simply wiped off the painted grease and the metal was the same as it was when he first started.
I'm a boilermaker we do similar work and work with fitters in refineries and chemical plants. Yes what you said is correct.
Sounds like you worked alone side your dad.
@@Kenlydford I worked in the oil/chemical refineries as well, but I give credit to those who teach me first.
@@JesusisLord-7A my dad was a steamfitter also:)
I was going to add putting anti-seize on the shaft would make it easy to get the cage off next time so you don't need the special tool anymore.
I can’t wait to see the squirrel cage residue material refining. I don’t recall ever seeing you do a video about that before. It will be interesting to see how much precious metals is going up and out over the years of use you put it through. Of course that is just what got stuck and only represents a portion of went up and out. I’m excited for this one for sure.
This is an old video. I processed that long ago. Can’t remember yield
@@sreetips oh, I kind of thought the motor dying so soon was a little odd. That makes sense then. I’ll have to take a look for the refining of the motor scrapings. I don’t remember seeing it and I’m pretty sure I’ve watched all your videos. I probably saw and don’t remember it.
I don’t think I did a separate video
@@sreetips ah, I understand now. I can be thick headed sometimes. 😂
@@djcbanks the video where he included the scrapes from the. Fume hood is one of the videos where he refines the filters from his refining. Not the most recent one but from 2-3 years ago. I watched it very recently. I don’t know how to link but it’s dated March 2020.
Fantastic job, overhead work can suck, even if it's nothing fancy. Cleaning the cage will keep that squirrel happy.
Good video that emphasizes the importance of safety and proper equipment.
The cementing silver on copper looked better than I had imagined. A joy to see.
Great work on the fume hood. She sings. MMmmMmmMMMMmmMm
I’m actually impressed that the motor lasted this long. A year or two ago I said this inexpensive Chinese motor with bronze bushings will have a “Short noisy life” yep 👍
I hope this one lasts a long time for you sir.
Thanks Sreetips
✌️PT
Hi, I've always been curious about your fume hood, I'm glad you shared a video of replacing your fume hood motor, and I'm looking forward to the video of gold recovery from the dust you collected from the fume hood motor.
Take care, golden man
Excited to watch the dust refining video! The stock pot, paper storage, carpet cleaning, etc... are my favorites! They really demonstrate how much value would be thrown away if not salvaged.
I was scratching my head for the first 5 minutes of the video “did I fall into my hot tub time machine again?” Glad we got to see this old video :)
Our company had three fume hoods in the lab and I was in the maintenance department so we did all of the work on the hoods. We did the same thing with all internal attachments and covered them with silicone. Our front doors were glass originally and we worked with a lot of HF and Nitric and the HF fumes would etch the glass in the front windows and frost them so the lab chemists couldn’t see brought them. We removed the glass and installed plexiglass windows and had to take the counter weights that were in the walls and cut them down so they were close to the lighter weight of plexiglass compared to the glass windows. We also bought our blower motors and squirrel cages from Grainger.
Ohh, Grainger, pricey.
You're quite the maintenance DIY'er in addition to your chemistry skills. Good job! You might ask Grainger if they can source you a better motor. Dayton makes good motors, but the sintered bronze bushings commonly used in motors that size are destined to fail. Although if you're replacing the whole thing the next time it fails, I guess it doesn't matter.
Think he's a navel engineer.
I’m addicted to your videos, so very interesting to see the chemical processes of refining precious metals. I would have never thought this is how it is done as I am not into chemistry but I also see it can be extremely dangerous without the proper safety measures which ventilation is one big component.
I would just like to say, with the quality of many UA-cam videos today, it’s easy to forget while watching your videos exactly how much work you put into editing your videos, putting information on screen for us so that we understand what is going on easier- and sreetips, I want you to know that your videos and the amount of work you put into filming and editing etc is very much appreciated by us. Especially your gold and silver recovery videos. Thankyou very much, you have made a brilliant channel. From Scotland, 🇬🇧👍
Good video on working on a fume hood. It would be neat to see the reinstall of a new one. Thank you for sharing brother.
This was an extremely informative video, thank you for documenting the repair process (also narrating overhead work)! Perhaps when you retire the current hood, you can do a video on pros/cons, features, or any modifications that you've learned are practical for continuous fume hood usage. Many thanks!
What's the coincidence that yesterday I watch a video of yours and start wondering about the fume hood setup. Thanks for this 😀
Awesome job. Everything up and running once again. 👏👏👏👏
I understand that this is an old video, but I still found it really interesting. Seeing how an effective fume hood is constructed was good.
Great to see you back up. Thank you for telling us about the backwards set screw. I thought I caught that out of the corner of my eye, but wasn’t sure.
Ok, now I just want to see a fume hood residue refining. Refine the cardboard. 😂 But seriously, I love your videos - never miss one. Keep up the good work!
Hey there friend! Next time you replace the motor or if you feel like it I would suggest opening the hood up and using a scotch pad or coca cola to remove the rust on your hood interior panels. Then get some high temp spray paint and spray it to prevent any future rust. It will extend the life of the metal hood.
old fellows need the closed captions. i do enjoy your show but with hearing issues if i turn up the volume "Mama" complains, so i need the closed captions, thanks from the deep south, New Orleans.
People that think refining is a pure profit activity need to watch a lot of your videos. Great job!
Adding a filter screen would be just below it, would help, if you believe it's catching precious metal partials, because, even lighter particles are being blown outside, it may be overkill, but you know, all to well they all add up, if you collect & save it.. Also adding a screen could prolong the life of the motor too.. Just an example we have a good air filtration in our home, I placed a 20" X 20" hose air filter in the back of a box fan and every month I replace it, it catches way more dust then I thought. As a plus, my wife & I also, now have -0- indoor allergy problems.. Sorry for going on so long. My point is, if you do find precious metal partials in that dust, just think what an added filter might recover.. I find your videos to be very educational & entertaining, so much so, that my wife & I are going to do more research and try it, after experimenting in very much smaller tests.. I am a skilled knife maker, so I do understand extensive safety procedures.. Thank you very much for sharing, even these smaller tasks..
That involved far less cussing than projects at my house! 😆 Thanks for the video.
That segment of the silver was really cool to watch. I bet people would love to watch another short video of the camera zoomed in even further. You could use royalty free music as well to keep it entertaining.
Very good video. This was a interesting process.
Maybe you should put some anti-seize on the motor shaft before you install the squirrel cage fan, and after you do that put a little silicone on the end of the shaft to keep fumes from creeping up the shaft and corroding it seizing up the fit for the next time you need to replace the motor.
just an idea to make the sealant of the screws a little easier to remove. Just put some tape over the screw and apply the sealant to the tape and a bit to the surrounding area. The tape is easy to remove and the sealant prevents the tape from disintegration and seals it airtight. You should be able to remove it much easier and also pretty clean.
Good video its probably worth getting a metal core filter like for Air con to keep the dust off the rotor, the dust makes the rotor unbalanced and the unbalance messes up the bearings, the motor bearings are probably just the cheap vacuum cleaner bearings if they are proper bearings, if they are sintered bronze they wear because of dust and the heat drying out the felt oil washer and if you can oil them with a fine oil like sewing machine oil they can last a very long time, the mix of chemistry dirt and fumes won't do the motor any good, ventilating the motor compartment to reduce the motor temperature would extend its life a lot of the area is sealed, the motor type is a squirrel cage induction motor from the interlocked wiring in the stator, the motor shaft has a shorted wire turn and tries to catch up with the magnetic field rotating in the winding, it gets quite hot and causes a short motor life
On a positive note, at least you have some extra copper from the dead motor windings to cement out more of that silver :).
I'm looking forward to seeing the fan extracts processed.
The silicone is a good idea 👍
Gooood afternoon from central Florida! Hope everyone has a great day! That blower motor has put some work in! Thanks for the content!
Gooood afternoon!
I feel like a city worker.
Incredible, I work with fiber glass and polyester, I also use this kind of extractor, and it just stopped to work yesterday because of too much glass dust, motor burned...Thanks to you I'll certainly fix it^^
me sitting in my lab with my mask on, thinking about how i could build a fumehood myself.
1sec later
sreetips: replacing my fumehood motor
my mind: xfiles theme starts playing
I remember watching the last time you had to do this. I can't believe it's been long enough to need to do it again!
We probably are going to miss the specific sreetips fume hood sound!!! 😂
This is an old video
All motors being equal, my evap cooler motor lasted 20 years, had it rebuilt in 1975 and it's been working great no problems ever since . Of course it gets oil in the bearings every year.
But compared to modern junk that we pay 3× the price of the original motors only last ⅓ of the time .
To all the youngsters out there: Once upon a time tools and equipment were built with pride and built to last as long as possible. Stuff didn't always wear out and break every few years .
We used to make the best stuff in the world. And the whole world wanted what we made.
@@sreetips, yes sir !
There's still some of us hold-outs who do the best job we can with the tools we have.
Wow..... Its been 2 years since the last swap...
I remember all the problems you had with it. Think it was 3-5 videos long.. that was one time I seen you politely get upset about something,..it was starting 2 adjitat me... fantastic video
Also I know its hard 2 reply 2 all your comments but for having 200k ish subs your pretty good.. its nice 2 know my comments arent overlooked.. thank you kindly good Sir.
This is an old video repost. Thank you
I was hoping you would save the crude that you cleaned of the hamster wheel to see if it had anything in it. I'm excited to see what it holds.
I did but can’t remember yields
Also be careful of the fit with an adjustable wrench. One it can round off the corners of your pull shaft secondly your knuckles are worth more than the squirrel cage. They call those adjustables knockle busters for a reason.
Nice Job Sir.
If it was 2018, I think that was 4 years, not 2 years....
I'm a little surprised you don't run filters.... I mean yeah, you'd have to change them all the time... But the volume of material that accumulated on the squirrel cage... I'm just speculating, but that could be ruining your motors....
Good design, makes it easy to replace scenes it is a high maintenance part of your lab 😀
Great video as always Sreetips.. you should get in front of the camera more often as you are a good looking guy! Thanks for documenting and posting this update.
About time you move to a cordless drill LOL
You look like the guy from… Time Tunnel …the old 70s Tv show..in a good way ..👍🏻🇬🇧🇬🇧🇬🇧🇬🇧
I remember that show!
0:57 that’s how the titanic is falling apart down under the ocean 😆
I was thinking about how I'd design ventilation for a fume hood, and it seems to me like there'd be a huge advantage to pulling out acid vapors with a venturi.. where the vent exits the building, use a foot or so of 6" or 8" chemically inert vent pipe, horizontal. (make this a size bigger than the blower). Attach a same size tee fitting, with the tee top horizontal and the spur facing down. Then, a reducer down to the blower size. Pass a blower size pipe through the tee and maybe 3" into the horizontal exit pipe. Connect the blower to the last pipe. Connect the blower inlet to an outside air inlet duct. Duct from the fume hood to the tee spur.
The blower will be up in the attic or on/near the ceiling, (less noisy, and away from arcing in the motor), pushing outside air through the top of the tee, creating a draft in the spur duct to pull fumes out of the hood.
If you don't supply an outside source for blower air, it'll draw (possibly heated) air from inside, lowering interior pressure slightly and reducing draft performance.
If you were to use your current fan for this, turn it over so that inlet air is pulled from above.. the inlet suction will support some of the weight of the squirrelcage fan and motor armature, reducing load and wear on the motor bearings for longer service life.
Like an air eductor
@@sreetips Of course.. the very next video UA-cam showed me, featured your first refining in your "NEW fume hood", making all of this obsolete to you, but maybe still useful for a viewer..
If I have to replace this current hood, I’ll probably get a 500 gallon poly tank with a six inch round on top. Cut the front off for access. Then install an air eductor for the air movement.
At least I'm glad that the motor didn't die while you were using the chlorine gas method to dissolve and further refine gold powder!
Emergency: remove the chlorine generator to outdoors
Job is not done til you put your signature SREETIP sign in the back
Great job on your fan motor. 👍
I was going to say...you have been having issues with the motors lately. Then I saw the description.😀
I watched for 5 min thinking you lost yet another motor, lol, then I realized this was an old video
I hope you process the fan cage material on video, I’m very curious what kind of precious metals are accumulated on it!
Hello Mr sreetips. Nice you produce a clip like this. Seeing forward if, you make a clip on the "golddust". Take care both of you Sir🌹. Arne
At the School of Mines, the hood motors were changed every TWO years. Student safety I presume. This was in the 1990s. Roger in Pierre South Dakota
You comment at 8:20 makes me think you've left instructions to have your body processed for precious metals when you've passed from this life.
A good Navy chief can do anything he or she puts their mind to.
God bless your heart. Maintain a positive flow.
✌️♥️👍
I'd love to see what yield you get from processing the dust and stuff from this!!! Also, they make plastic flat razor scraper things for cleaning windows, might make removing that silicon easier.
Can’t remember the yields - long time ago
is there any cooling air on the motor if not that may have contributed to the bushings prematurely falling other wise id suggest a once a year cleaning of the impeller blades with some kind of solvent but just my 2 cents
G'day my friend hope you are well? I'm pretty excited I've started to process my 15kgs of sterling silver. I'm very happy the first kilogram bar I made yeah?? But I kept it as it's something to remember lol but I've produced 4 kgs at present of some very nice silver. It's sadly not 99.9 but it's 99.6. yeah just gotta be little more patient. But all your references have truly be huge fun. Thanks buddy hoping to get another at least 8kgs I'll be hugely happy. I'd payed no more than $500 AU just finds at opp shops and so on. Enjoy Life my friend. Patrick western Australia.
IT SEEMS A LITTLE BIT LOUDER THAN THE LAST ONE. YOU SAID THAT YOU ARE GETTING RAIN WATER 💧 COMING DOWN FROM THE EXHAUST PIPE. MAYBE PUT A STAINLESS STEEL CAP ON THE TOP. HOME DEPOT CARRIES A UNIVERSAL CAP FITS
6 OR 8 INCH PIPE.
A plastic one would work better. Acid doesn't corrode plastic.
THis went a lot better than the last time you had to do it.
When he was scraping the gunk I jokingly said to my self hit that dust with some nitric acid. Never mind he actually swept it up see if there's precious metals in the dust.
Hello sir, I just made my first AP solution (HCl, peroxide) and put 200 g of gold fingers into it yesterday. Normal goldfingers foils float like charm, but some ancient russian goldfingers are still resisting. I let work it for few days. No bubler yet, I do not know, if it is needed or just "nice to have"..
Your fumehood is like my car, that has more than 500 000 km (310 000 miles), last bigger service, see, what it lasts and get new then... 🙂
mr. sreetips says ...process in a later video...
me in my mind: ...killed the radiostar
mr. sreetips: killed the power
xfiles theme starts playing again
krud cutter an orange based solvent will soften silicone.
We could do a little parody of sreetips catching bugs , ants and roaches around and in his work area , then him saying that they may have some precious metal dust on their little feet and he will process them at a later date .
got that 1980's dewalt! lol I was just wondering a couple videos ago how often you change filters for your hood! Great videos
You sure could use a DeWalt drill/driver sponsorship!
Good video Mr. Sreetips. There is something about "mend and make do days" that make you feel good isnt there ? Better to do it yourself than pay hundreds of Pounds (or in your case Dollars) to get someone to do it. I would be very interested to see if there are any precious metals in the sweepings you recovered though, if there are it just goes to show how easily lost these things are during processing.
Was a good servant! Rest easy mr motor
Nice something new a different you should do daily life of stree
Come on there may be some gold or silver on there. Get that thing digested 🤣
Hello Sreetips, any chance of a video where you show how to clean all of your equipment after a refining? Always been curious about that.
@sreetips can you do a video of the metals in non solid form to see if they would set off a metal detector ? Gold sponge,silver Chrystal , cement silver, gold and silver in solution etc. It's something I always wondered
The metallic will report with a metal detector. The metals in solution will not
@@sreetips I find that fascinating
I was kind of expecting the motor to have a Sreetips label on it... lol
Didn’t think of it
I thought you wanted to get a new hood? Nice video!
cheers sir havent you think about replacing the bolts for stainless steel instead covering it with silicone???
Those were stainless fasteners
@@sreetips ok then
Look at all that purple splatter !
Being an auto mechanic and my pay is directly proportional to the time it takes for me to do a job ( flag time ). Buying power tools will literally pay for themselves in weeks and sometimes days so please forgive me Sreetips if I cringe a little @ 2:41 watching you struggle here with that screwdriver 🤣
if you take the back baffle out of your fume hood... you would be baffleless!
I was wondering why you don't use a filter to catch all the dust and then burn the filter to collect the precious metals
Didn’t think of it
Shut down twice per year, get your timed maintenance done on all you equipment. Keeping it all clean, greased an in good working order would be the ticket
Take care of your equipment and your equipment will take care of you. Neglect your equipment and it will fail at the worst time possible.
A small bit of anti-seize on the shaft would make the blower come off easier should you have to do this again.
I did apply anti-seize
@@sreetips I must have missed that. I saw you put some on the set screws but not on the shaft of the motor before sliding the fan blade on. 😴
I know you replace this every couple years. Just a cost savings. Grainger is fine, but I bet your local big box store has the very same motor in stock for much cheaper. Check attic fans in the roofing section. I can say I got that exact motor from HD two months ago to replace my failed attic exhaust fan motor.
What would us back yard refiners do with out you. Than you for you time.
Speaking from much experience, Dayton motors are not high quality. Look to GE, Baldor,Mitsubishi, or another brand. You pay a little more but the reliability is there. Great video BTW.
I could not find a replacement that would drop in, in those brands
Great video sir I wonder if you could use stainless steel screws and parts thank you for sharing five stars
Those were stainless fasteners
@@sreetips wow I didn't think the acid would effect the stainless steel that way thank you sir
Acid fumes will corrode and destroy anything metal.
Have you thought about trying some high temp silcone spray? Or something more spray paint like that would coat the bolts but make then easier to remove in the future?
Didn’t think of it
39K👍's up thanks for sharing
I have a question about tungsten silver contacts. Have you ever processed them? I watched another UA-camr attempt and have a lot of issues.
Another reason I ask I'd I found a place for the alloy contacts, cheap.
No, I’ve never tried tungsten contacts.
It is outside of the purview of your channel but there has been lots of talk about lithium battery recycling recently, it would be interesting (to me at least) to see you dissolve a lithium battery in acid and recover the aluminum, copper, lithium, cobalt and tin.
I’m not familiar with those metals
Lithium is realllllllyyyy reactive and finicky. It's poisonous, , and burns easily enough in air that, Like it's siblings sodium and potassium, it has to be stored in a hydrophobic substance. Lithium is so light, though, petroleum jelly is used rather than mineral oil.
I recently had to "fix" my fume hood fan blade, one of the fins had recived a healty does of corrosion making the fan incredibly unbalanced.
I cut all the tips back to match the shortest. problem solved....for now lol😅
Side note: what exactly does stannus chloride do? I know it's used do testing for gold but I throw a couple drops straight into my solution with some SMB and basically was ably to skip a couple steps by precipitating the gold without denoxing/balancing PH.
is this a viable technique or is there a serious problem that I'll come across down the road?
also thank you once again for the videos you put out, I'm extremely close to being able to refine gold from start to finish. just need some legit
melting dishes!
I use stannous chloride to test my solutions for the presence of precious metals, what metals are present (they turn a different color for each type of metal I have in solution). And the relative concentration of the metals in solution. But I’ve never used stannous to drop metals out of solution:
Unfortunately it will be the most frequent maintenance item in your lab 😕
Any hints on what the next video series might be? I’m eagerly awaiting more sreetips content.
I got the Covid
Praying for you. My house hold had it last week. It’s definitely going around again!
This is the second time you had problems with the motor for your fan since I started watching. Are the fumes bad for the motor?
Probably
Just stopped in to say Hello.
Hope you're well mate.
Did you ever process those extraction residues?
Yes, but I can’t remember the yields