Really nice job on the compressor .I might have done it a little different than what you did but overall I think it turned out pretty nice . Maybe next time you could try jet-strip or a citrus based paint remover instead of having to go through all the hassle of using a grinder for removing the paint . Out of curiosity how much did everything cost aside from the used parts you recycled ? Anyway great job and 👍👍👍 ✌🗽
Any excuse I get to use my grinders I do. Something therapeutic about them. Being a painter for a custom oem trailer shop love my job. But I would used a grinder then a orbital or Palm sander with 180 and 320 would only take a few minutes even by hand. You could still see the scrapes clearly. Still looks good, I would have used some spray can primer, then paint, some cheap spray clear as it's gonna get dirty and maybe oil leak out and such. Unless I was already doin a 2k clear on a show trailer or something. This gives me some ideas. But one I want to try is making a compressor from two push lawnmower engines. You take one and with a belt connect it to the other and take the spark plug out of your secondary and use a fitting. And your operational motor will spin the it and it pumps air a good bit actually good cfms. And can rig them up on one unit making it portable. Filtered air and their splash lubricated. As long as it has compression and you can get plug out. Doesn't matter if the carb is messed up or whatever don't need it. Just need air to get in. I've seen s couple videos on them. Or it can spin a car alternator hooked to a power inverter and car battery. You can also make little generators and pumps out of little two strokes as well. A small alternator or with a pulley change is easy even for a small weed eater motor to turn
Functionally operates just as it should th-cam.com/users/postUgkxiiMg_x4gIWeXMWfBnDdRnME4qJUAva4w holds pressure perfectly when not in use. Glad one of the other reviews pointed out that the bottom pressure release valve was open; thought it was defective at first.
As statedby multiple other commenters, welding on a pressure vessel is a recipe for disaster and often a fatal one. At the very least you could do a hydrostatic strain test yourself (if you're so cheap that your life is worth less than the $25 any welding shop would Charge to do one) and run it up to at least 150% of the intended working pressure. And secondly, ditch the teflon tape and pickup a tube of pipe dope, it seals better, less messy & best of all, you can make adjustments to the fitting without compromising the seal. Lastly, those compressors do like to spit their oil so fitting an oil trap between it and your reservoir would be a good addition then drill/tap a fill port in the compressor shell that you can pour the collected oil back in periodically, works like a charm for me and mine have been operating in pretty gruel conditions as vacuum pumps for the better part of 15 years.
The only problem with using a fridge compressor is that it is normally cooled by the refrigerant returning to it from the suction inlet, so it will not last very long if used continuously, it will burn out, The other problem is that the oil from the compressor also comes out of it from the discharge as it is running, so the tank will collect the oil and the compressor will run out of oil and seize. An oil separator is needed to collect it, and should be returned into the compressor housing regularly, it can be refilled by the suction inlet. the tank is also missing a drain port at the bottom in order to remove the water accumulation in the tank.
This is what I was thinking I thought at first the drain might be the old top of tank last fitting he put in. You'd have to turn the tank forward 90 degrees if thaf was it. I didn't recall seeing a pressure relief valve. And was wondering if the compressor would run with no oil or how it would work as the oil will be pumped our the discharge in short time. But I wouldn't mind using some of these tanks as storage tanks for extra capacity if I got them free. 11 gallon tank is only like $40 and just needs a 1/2 inch npt fitting swap to get rid of the bs fitting they come with. Or Lowe's has a 7 gallon one 185 Pai rated with the regular industrial fitting and right npt on for $60. I run 2-3 compressors in parallel with a t fitting into a portable tank and run my main line from it. 50 ft lines to let the air cool for the separators and that makes it easy to connect to separate breakers. 40-50 gallons 125-150 psi depending on which ones I use. And 7 to 8 cfm@90 for if I use the smaller one with one of my other two 10cfm if I use my two main ones. And 12.5 cfm if I connect all three. Usually always have two. Even if I don't need both for some jobs I leave it connected for extra storage capacity. Works great for painting. And j don't need dedicated 220v and I can load it in and out my truck in 5 mins and paint or air things up anywhere. Get great deals off Craigslist for compressors oiled and oil less. All oiless use the same internals there's one company that makes the sleeves piston and rod. There's like two literally that cover every brand. And it only cost $30 if the motor is good you can get compressors for a steal and for 30$ have a brand new oilless compressors. Or you can go to harbor freight spend 300 on 2 21 gallon compressors or the 10 gallon versions and have 10cfm @90 the same as entry level 60s start out with for $500-600 without installation or wiring. And it's portable. Win win. Constant supply of cheap Craigslist compressors people never use and get rid off. Especially right before Christmas and right after winter ends people clean up. I wish I would have saved the tanks on a few. But once they get older and Don know previous drain history I've erred on the safett side. But a nice big propane cylinder would be great . If j ever do a stationary here it would be tank. Pricing tanks it's cheaper to buy station unit 60-80 gallons then just the tank makes no damn sense
You are right about this, I have an A\C compressor that i was going convert as shown in this video. With the compressor running standalone, it gets very hot! It also does eject fine droplets of oil as u have mentioned.
And the life of the compressor is also shortened because it sucks moisture and that is very bad for a refrigeration compressor , the oil is hygroscopic and absorbs moisture and deteriorates it too , anyway it's a good use before you throw it away .
This isn't a DYI project for an amateur. He really knows exactly what he's doing. It requires both mechanical and electrical skills to it safely. A good, fun project.
Good idea and invention you acknowledge to skill in you good job thank you for I see your TH-cam God bless you i'am from Philippines but still in Israel I work ask a caregiver old man
Geez, the knockers are about. Maybe this guy doesn't have $40 to 'buy' one. His workshop and tools are pretty average (no offence) but is functional so I am guessing he isnt a wealthy individual with credit cards at the ready. Looks like he scrounged and saved the major parts to this. He even may have the $40 but likes to test himself and be creative as to what he can make from bits lying around rather than flashing the credit card at the local hardware superstore. Hats off to him for being creative, working through the project and completing it. Hats off also to the guys here with constructive comments ie drain valves etc. To the "shoppers" who posted here, I never understood why you would pay $100 at the outlets for a product that cost $40 (or less) to make. That laziness cost you $60.
trust myself more than anyone else alive, that's why learning and diy, or having the knowledge hands on, is super important. one time I didn't have time to do my own oil change , air filter etc , went to drive through quick change, watched like a hawk, stopped big mistakes, dipstick, air filter cover, oil cap not replaced correctly. This dude is my hero, I do my own mowers etc also my own electronics. my $1500 3d 4ktv isn't made anymore, $50 all in diy, back to 100% #supportrighttorepair
⭐️ Just so people know: Always fill gas bottles to the TOP with water. This will displace any residual flammable gas before cutting, drilling or welding! It’s not done to clean the inside.
thanks men you just save a lot of lives. imagine people making DIY air compressor using old gas tank drilling it right away without filling watter to degas the tank ..
This is pretty dang cool. I’m not sure if he reused the rubber bushings that came on the pump (I didn’t see them in the parts pile) but figured I’d mention it would help stop vibration and noise if just having the pump mounted touching the tank.
I built one in 1975 to do airbrushing. I chose a refrigerator compressor because it's so quiet. It was a smaller compressor, but volume wasn't a concern because an airbrush takes very little volume. I mounted a little propane bottle on top of the compressor to smooth out the airflow, a pressure switch and an air regulator, and a tee handle to carry it around. I put rubber feet on it to cut down the noise even further. It was almost silent and very light. One mistake I made is didn't put a tank drain on it and the tank rusted out after a few years. I was wondering how you drained your tank. I suppose you could open the propane valve but you would have to tip it up on end. Nice build, thanks for posting!
Few years ago i tried to make some thing similar, but over heating was the issue. In case of refrigerator the cold gas returning back cools the compressor -motor, but here the compressed air rather heats the setup. In a Compressor there is a proper arrangement to take away the heat generated. These type of air compressors can run for a few minutes only.
Fantastico!!! My late uncle on his deer farm would have been proud of you! Great skills on the welding gear and a very practical application of enterprise. Thanks for posting. Cheers - from New Zealand
A lot of jealous people will find a problem with your invention why because they always do I thought you did a real good job making your Air compressor👌👋👍
Cool but how do u keep compressor lubricated and also from the lubrication escaping with the air? Cuz fridge compressors move gas freon with its compatible oil together.
The compressor intake inside the housing has baffles to prevent the oil from being sucked in with the gas. Lubrication is provided by splash within the shell. If he wanted to he could occasionally add a small amount of oil through his air intake tube. th-cam.com/video/3Uwx-_VecHo/w-d-xo.html I had to look it up, you had my curiosity up with your excellent question!
NEVER DO THIS!!! IT IS DANGEROUS AS HELL!!! THE COMPRESSOR IS AT RISK OF EXPLODING!!! A COMPRESSOR THAT IS DESIGNED AS AN AIR COMPRESSOR IS BUILT TO RETAIN THE CRANKCASE OIL IN THE CRANKCASE AND OUT OF THE COMPRESSION CHAMBER. A REFRIGERATION COMPRESSOR IS DESIGNED TO ALLOW OIL INTO THE COMPRESSION CHAMBER SO THAT IT WILL CIRCULATE THROUGH THE REFRIGERATION SYSTEM. WHEN THE COMPRESSION CHAMBER IS FILLED WITH REFRIGERANT, IT IS SAFE TO ALLOW OIL IN THE CHAMBER BECAUSE THERE IS NO OXYGEN PRESENT. WHEN A REFRIGERATION COMPRESSOR IS USED TO COMPRESS AIR, OIL AND OXYGEN ARE BOTH PRESENT IN THE CHAMBER, AND THE OIL COULD EASILY DETONATE!!! NEVER DO THIS!!! IT IS DANGEROUS AS HELL!!! THE COMPRESSOR IS AT RISK OF EXPLODING!!!
To the TROLLS below, his welds are fine and he did all the needed deeds to build this little compressor. It won't blow-up, or implode, if properly maintained. A standard, 1/4" water "drain cock" should be tapped into the bottom of the air tank so water which *WILL* collect can be drained regularly. (If that was done and I missed it, sorry, but don't recall it). This is a nice, well made, quiet little compressor. A fridge compressor uses oil (spec. automatic transmission oil) which helps it to draw propper vacuum and makes it be quiet. BE WARE! Because they run on oil, you cant drag this thing around, operating at odd angles. It must be flat when you use this compressor. Also... Pull the hoses from the compressor and drain (turn over, drain from the inlet/outlet tubes) and change the oil at about 20hrs service. The oil will absorb water (and some particulate) which reduces its efficiency. These refrigerator compressors also make good vaccuum units and can draw almost a 30in vacuum ("ideal" vacuum level to remove water from a closed system). Just disconnect the rubber lines from the compressor body and add appropriate vacuum lines for a great vacuum device. It's good for air conditiong work on cars, pulling a vacuum on a degasing tank, forming Kydex components, drawing vacuum in food bags/containers, etc.. These are strong little vacuum pumps. I was an automotive tech for many years and a pneumatic repair tech for almost 8 yrs, fixed a lot of compressors and built a few of these along the way. If you have the ability to make one, they are very versatile and, with right filtration and regulation, make excellent air brush compressors, as well.
Good idea, especially when recycling become a world priority. Just a little remark for the lack of drain plug, discharge valve (the group cannot start again under high pressure) and the most important, a security valve. Personnaly, for Fe/Cu connection, i never use teflon tape. I prefer anaerobic resin.
Good point about the recycling issue .In this world of consumer mass consumption and throw away goods , people have forgotten about how to rebuild things or tinkering . I grew up poor as a kid and learned a lot about mechanics and working on my own cars and whatever else I had to fix because we couldn't afford to pay for repairs or to buy something new. Funny how the same people who used to laugh at me because I was too poor to have new things would later come to me with all their mechanical problems . Now because of the lack of skilled labor and the lack of knowledge in mechanics or salvaging things we have a shortage of skilled labor in various markets like welding or electricians . All the kids are being pushed to learn about computers and IT when we really need skilled engineers and craftsmen (or women ) especially considering the fact that the infrastructure in this country is in dire need of a rebuild .
To say the commercials are excessive is an understatement, I know you want to make money but they're headed in the wrong direction in my opinion. Great video I don't think the point of this video was to say buy one would be easier and cheaper but rather than what you're capable of building. Most people don't realize how much fun it is to build stuff and they're thinking how much easier it is just to buy one. Also some in countries availability is not as great as it is and others, mad respect for your ability, you did a great job.
When applying PTFE tape, always wrap in the same direction as the rotation of tightening. Nice end result, but by the time you buy all the components it would be as cheap to buy a compressor out of a retail outlet.!!
He wrapped the ptfe tape onto the fittings in the correct direction, but it always amuses me when people release the tape from the roll like they're using sticky tape....it's much easier to control if you wrap it onto a fitting from the top side of tape, not the roll side...👍😜 Also.....bit of a concern...I don't see a PRV or NRV anywhere, and no tube connected to the unloader...gotta ask how long it's gonna keep working??...LOL
If you wrap the PTFE tape in the direction of the tightening it will undo the PTFE tape when it tightens your wrong. Have the thread of the bolt facing you and wrap it clockwise then when you tighten it, it will be tightening the tape on the thread
I once worked with a welder who insisted that PTFE tape wouldn't work on black iron pipe. His problem was that in the past he had wrapped a joint in the wrong direction and the tape rolled out of the joint when he screwed it together. He was convinced that it wouldn't work, and nobody was ever able to get him to come around.
I've said this before to others in here but I'll ask here too: How loud is a running average sized workshop air-compressor? How loud is a running everyday fridge? That alone is a good reason make an air compressor out of a fridge compressor. I've thought about modifying an air compressor to use a fridge compressor and watched this video to see how it might be done.
I am a 40 year welder and I do not recommend a do it yourself person. Weld on a pressure vessel. The risk of explosion is too high. Get a certified welder to do that part and pressure test it afterwards It would be better to buy an already tested air tank instead
I'm surprised you did not notice he was stick welding Malleable Iron pipe fittings he runs a very high chance of the weld failing. More like when, not if it fails. At least I am out of range of that disaster
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I used to use a fridge compressor to evac commercial refrigeration units and domestic fridges and freezers before re-gassing them, an old fridge motor makes a fantastic vacuum pump.
Mr. DK DIY, a safety relief valve may be something you should consider. Also, a refrigerator compressor needs lubrication it would normally get from the Freon, does it not?
I would personally avoid welding the pressure vessel if at all possible. You could do all of the same things using the existing port and a different variety of fittings. Just my $0.02 ☺️
Excellent job! ............ except there is no drain plug to remove water and condensation and there is no blow off valve or discharge valve. One more minor thing I might add is that you REALLY NEED TO LEARN how to wrap teflon tape around threads. That is NOT the way to wrap threads. But other than that..... BRAVISSIMO!👍👍👍
Nice job making it from scratch. A LOT of time could be saved if you bought a used air compressor for cheap and just replaced the electric motor with the compressor motor, but you would still need to find a way to replace the oil that is lost from the compressor. You might want to use a smaller 2 gallon tank, due to long refill time. It would make a nice airbrush compressor. Pretty nice DIY though.
excellent thumb up only as a suggestion it is very important that you have a threaded outlet at the bottom to purge the water that condenses inside the tank since otherwise this water will cause corrosion inside the tank tank ... but excellent video !!! great skill!!!
I personally think that for a home made unit you did an excellent job! The remark that teflon tape isn't recommended for air fittings is not quite correct! I managed an automotive wholesale tool and equipment warehouse and we built air compressors from 1/4hp up to 25hp, Electric, gas and diesel driven on 20 gallon tanks all the way to 240 gallon and we used teflon tape for all of the connections and we never had any complaints from customers that any line was plugged or leaked. All units were fully ran and tested before leaving the warehouse. I would make one recommendation though and it was mentioned in another reply, that you need to install a drain cock in the bottom of the tank to facilitate draining any water that accumulates in the tank and should be done on a daily basis when the compressor is used. One more thing, any welding done on a tank deteriorates the integrity of the metal which will cause a failure at the weld. However I don't think it's a problem that you have to contend with, with the pressures that you will be dealing with on that unit. Good luck and keep the Fantastic Videos coming, they are enjoyable!
I recommend laying out _all_ the fiddly bits -- perhaps on the melamine -- in their expected relationships _before_ begininning the assembly. If possible, treat sub-assemblies first without disturbing the lay-out, add the completed sub-assemblies back to the layout, and progress through until everything that can be done 'in the air' is done, then hook it up to the big iron. The countrr-top layout doesn't _have_ to use the actual parts (e.g. the air line, the electrical lines), but some proxy would help tyros to grok the recipe and the process.
No pressure safety valve set for 110% of maximum pressure...in case the pressure switch failed to act... An over pressure horn will be an advantage.. An air filter at the delivery side ..
Without a pressure relief valve this is an accident waiting to happen. These compressors can do 600psi - 800psi. Looking at the P12TY compressor specification the best you`ll get is 1cfm. You do need to replace the oil that was in the compressor because when it comes Into contact with air and moisture it will turn acidic and eat the copper motor windings. Your compressor will need 400ml of a non foaming mineral based hydraulic oil. Lastly, these compressors shouldnt exceed a 50% duty cycle or a case temperature of 100 deg C as it will degrade the oil. The compressor has an internal thermal trip to protect the windings but the trip rating is based on refrigerant not air. If the trip operates, you can be sure you are not doing the compressor any good ;)
He did reuse the shutoff valve. I guess he could turn the tank upside-down and open the valve to let the water out. This is the least of his worries, compressor lubrication is the bigger problem, not to mention it dumps air rather quickly and the compressor cant keep up. For a little over $100.00 you can purchase a 6 gal. commercial grade compressor at, Harbor Freight.
yep, my only issue & I have built many compressors from salvaged compressors and components. but have also had 1 when I was very young fail due to water inside near where leg was welded at factory. plus got a few free small ones that had rusted out tanks I rebuilt so add a simple drain plug of some sort.
Lol this compressor is for a closed loop it is ment to pump a semi cooled gas round the has has a high oil content to lube the compressor so now with no lube and pumping uncooked air you can see.where I am going also if you have welded.the tank it can make it brittle if the tank cracks when full it's like a home going off compressor tanks are heat treated after wielding to stop this then filled with water and then tested to 2x max pressure Computer air can be very dangerous it's not to be made at home a much quicker safer compressor can be purchased for under £30
These compressor types normally function within a closed-looped hermetic system, inclusive of oil. The reason as to why a refrigerator must not operate before 24 hours have gone by, when the refrigerator is layed flat on one side, is because of the oil needing to drain. Otherwise, the compressor's motor will overheat, through attempting to compress the refrigerant oil of which has entered the compression chamber. If this comressor is therefore absent of any oiling, it will surely seize within a short time
Great repurpose of stuff that would end up in landfill. Inexpensive build for something that would cost around $150 (IMO). Few questions - How do you handle oil for the compressor? What is the max pressure you could charge the propane tank to? And, how long does it take to charge to 150 PSI? Thanks!!
Hi, I admire your genius , but, find the video lacking in information on the items used outside of the fridge bits, ie, parts, sizes etc. Don’t stop showing us your brilliance, as an engineer, I admire you.👍
Need to release pressure in the hose to connect to the tank so the pump can restart to pump again easily, if not the pump sometimes can not restart to pump again when pressure inside the tank is about 2 bars (usable pressured ).. I have built 2 of this and used up to 10 years now, very quiet compressors always use them at about 1- 5Am no body else complain noisy !
Good idea, but without lubrication, it won't last long. Refrigerant compressors are lubricated with the lubricant in the freon. Without freon, they don't get any lubrication.
Que de mais para vc reduzir o barulho do seu compressor, o aconselho pegar borrachas e colocar nos pés antes das arruelas e após encaixar o motor coloque arruelas e aí sim a porca. Parabéns adorei seu projeto
Should have bought some rubber grommets to set the air compressor on the four bolts that way you wouldn't have to listen to the vibration I built one is very quiet I used a pancake tank
Actually, simpler would have been to cut the mounting plate _out of the fridge,_ -- complete with damping grommets -- and weld _that_ to the tank. However, lacking the original mount, it would make some sense to install the bolts, nuts, and washers onto the base of the compressor, adjust for height and level, on a level surface, then plop the whole onto the tank, tack, then weld all four bolt heads sequentially.
I'm totally new to repairing tools like a compressor, but my compressor keeps tripping the breaker. So I'm being forced to learn. I start out replacing the start capacitor. Then had to replace the switch assembly, manifold, gauges, everything. Because the OEM switch was discontinued. Still doesn't work, in fact it threw sparks out of the motor. At this point, I'm kind of lost. I learned about cleaning the contacts in the motor and I'll try that next. What would you suggest? I watched your video and got questions. What did you use for a motor to run the compressor? Also no capacitors (no motor, no capacitors?) Would of rather been there while you built it than watch the video. Just to much that I had questions about. I did enjoy the video though. Thanks.
Really nice job on the compressor .I might have done it a little different than what you did but overall I think it turned out pretty nice .
Maybe next time you could try jet-strip or a citrus based paint remover instead of having to go through all the hassle of using a grinder for removing the paint .
Out of curiosity how much did everything cost aside from the used parts you recycled ?
Anyway great job and 👍👍👍
✌🗽
Any excuse I get to use my grinders I do. Something therapeutic about them. Being a painter for a custom oem trailer shop love my job. But I would used a grinder then a orbital or Palm sander with 180 and 320 would only take a few minutes even by hand. You could still see the scrapes clearly. Still looks good, I would have used some spray can primer, then paint, some cheap spray clear as it's gonna get dirty and maybe oil leak out and such. Unless I was already doin a 2k clear on a show trailer or something. This gives me some ideas. But one I want to try is making a compressor from two push lawnmower engines. You take one and with a belt connect it to the other and take the spark plug out of your secondary and use a fitting. And your operational motor will spin the it and it pumps air a good bit actually good cfms. And can rig them up on one unit making it portable. Filtered air and their splash lubricated. As long as it has compression and you can get plug out. Doesn't matter if the carb is messed up or whatever don't need it. Just need air to get in. I've seen s couple videos on them. Or it can spin a car alternator hooked to a power inverter and car battery. You can also make little generators and pumps out of little two strokes as well. A small alternator or with a pulley change is easy even for a small weed eater motor to turn
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Functionally operates just as it should th-cam.com/users/postUgkxiiMg_x4gIWeXMWfBnDdRnME4qJUAva4w holds pressure perfectly when not in use. Glad one of the other reviews pointed out that the bottom pressure release valve was open; thought it was defective at first.
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As statedby multiple other commenters, welding on a pressure vessel is a recipe for disaster and often a fatal one. At the very least you could do a hydrostatic strain test yourself (if you're so cheap that your life is worth less than the $25 any welding shop would Charge to do one) and run it up to at least 150% of the intended working pressure. And secondly, ditch the teflon tape and pickup a tube of pipe dope, it seals better, less messy & best of all, you can make adjustments to the fitting without compromising the seal. Lastly, those compressors do like to spit their oil so fitting an oil trap between it and your reservoir would be a good addition then drill/tap a fill port in the compressor shell that you can pour the collected oil back in periodically, works like a charm for me and mine have been operating in pretty gruel conditions as vacuum pumps for the better part of 15 years.
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The only problem with using a fridge compressor is that it is normally cooled by the refrigerant returning to it from the suction inlet, so it will not last very long if used continuously, it will burn out, The other problem is that the oil from the compressor also comes out of it from the discharge as it is running, so the tank will collect the oil and the compressor will run out of oil and seize. An oil separator is needed to collect it, and should be returned into the compressor housing regularly, it can be refilled by the suction inlet. the tank is also missing a drain port at the bottom in order to remove the water accumulation in the tank.
This is what I was thinking I thought at first the drain might be the old top of tank last fitting he put in. You'd have to turn the tank forward 90 degrees if thaf was it. I didn't recall seeing a pressure relief valve. And was wondering if the compressor would run with no oil or how it would work as the oil will be pumped our the discharge in short time. But I wouldn't mind using some of these tanks as storage tanks for extra capacity if I got them free. 11 gallon tank is only like $40 and just needs a 1/2 inch npt fitting swap to get rid of the bs fitting they come with. Or Lowe's has a 7 gallon one 185 Pai rated with the regular industrial fitting and right npt on for $60. I run 2-3 compressors in parallel with a t fitting into a portable tank and run my main line from it. 50 ft lines to let the air cool for the separators and that makes it easy to connect to separate breakers. 40-50 gallons 125-150 psi depending on which ones I use. And 7 to 8 cfm@90 for if I use the smaller one with one of my other two 10cfm if I use my two main ones. And 12.5 cfm if I connect all three. Usually always have two. Even if I don't need both for some jobs I leave it connected for extra storage capacity. Works great for painting. And j don't need dedicated 220v and I can load it in and out my truck in 5 mins and paint or air things up anywhere. Get great deals off Craigslist for compressors oiled and oil less. All oiless use the same internals there's one company that makes the sleeves piston and rod. There's like two literally that cover every brand. And it only cost $30 if the motor is good you can get compressors for a steal and for 30$ have a brand new oilless compressors. Or you can go to harbor freight spend 300 on 2 21 gallon compressors or the 10 gallon versions and have 10cfm @90 the same as entry level 60s start out with for $500-600 without installation or wiring. And it's portable. Win win. Constant supply of cheap Craigslist compressors people never use and get rid off. Especially right before Christmas and right after winter ends people clean up. I wish I would have saved the tanks on a few. But once they get older and Don know previous drain history I've erred on the safett side. But a nice big propane cylinder would be great . If j ever do a stationary here it would be tank. Pricing tanks it's cheaper to buy station unit 60-80 gallons then just the tank makes no damn sense
I like your observations sir... It looks like you have a lot of knowledge about compressors 😊
You are right about this, I have an A\C compressor that i was going convert as shown in this video. With the compressor running standalone, it gets very hot! It also does eject fine droplets of oil as u have mentioned.
And the life of the compressor is also shortened because it sucks moisture and that is very bad for a refrigeration compressor , the oil is hygroscopic and absorbs moisture and deteriorates it too , anyway it's a good use before you throw it away .
It is true.
This isn't a DYI project for an amateur. He really knows exactly what he's doing. It requires both mechanical and electrical skills to it safely. A good, fun project.
Your project was very informative. The number of commercials puts you in competition with cable.
Good idea and invention you acknowledge to skill in you good job thank you for I see your TH-cam God bless you i'am from Philippines but still in Israel I work ask a caregiver old man
Geez, the knockers are about. Maybe this guy doesn't have $40 to 'buy' one. His workshop and tools are pretty average (no offence) but is functional so I am guessing he isnt a wealthy individual with credit cards at the ready. Looks like he scrounged and saved the major parts to this. He even may have the $40 but likes to test himself and be creative as to what he can make from bits lying around rather than flashing the credit card at the local hardware superstore. Hats off to him for being creative, working through the project and completing it. Hats off also to the guys here with constructive comments ie drain valves etc. To the "shoppers" who posted here, I never understood why you would pay $100 at the outlets for a product that cost $40 (or less) to make. That laziness cost you $60.
trust myself more than anyone else alive, that's why learning and diy, or having the knowledge hands on, is super important. one time I didn't have time to do my own oil change , air filter etc , went to drive through quick change, watched like a hawk, stopped big mistakes, dipstick, air filter cover, oil cap not replaced correctly. This dude is my hero, I do my own mowers etc also my own electronics. my $1500 3d 4ktv isn't made anymore, $50 all in diy, back to 100% #supportrighttorepair
⭐️ Just so people know: Always fill gas bottles to the TOP with water. This will displace any residual flammable gas before cutting, drilling or welding! It’s not done to clean the inside.
1
thanks men you just save a lot of lives. imagine people making DIY air compressor using old gas tank drilling it right away without filling watter to degas the tank ..
Its not gas tank bro this is some different 😉👍
@@MrDKDIY Hey, no worries 😉 Love the channel btw
@@jet4460 😎👍🏼
This is pretty dang cool. I’m not sure if he reused the rubber bushings that came on the pump (I didn’t see them in the parts pile) but figured I’d mention it would help stop vibration and noise if just having the pump mounted touching the tank.
Cool project!
Good project and a use for these throw away items although I expect it takes ages to reach any useble pressure.
I built one in 1975 to do airbrushing. I chose a refrigerator compressor because it's so quiet. It was a smaller compressor, but volume wasn't a concern because an airbrush takes very little volume. I mounted a little propane bottle on top of the compressor to smooth out the airflow, a pressure switch and an air regulator, and a tee handle to carry it around. I put rubber feet on it to cut down the noise even further. It was almost silent and very light. One mistake I made is didn't put a tank drain on it and the tank rusted out after a few years. I was wondering how you drained your tank. I suppose you could open the propane valve but you would have to tip it up on end. Nice build, thanks for posting!
Few years ago i tried to make some thing similar, but over heating was the issue. In case of refrigerator the cold gas returning back cools the compressor -motor, but here the compressed air rather heats the setup. In a Compressor there is a proper arrangement to take away the heat generated. These type of air compressors can run for a few minutes only.
Right, and such a small tank, you have very little working capacity. Also, it takes forever for the thing to pump up.
Yes, you are right, this is not practicable, also tank can bust due to high pressure.
De 10go maestro..👏🏽👏🏽👏🏽👏🏽👏🏽
Fantastico!!! My late uncle on his deer farm would have been proud of you! Great skills on the welding gear and a very practical application of enterprise. Thanks for posting. Cheers - from New Zealand
A lot of jealous people will find a problem with your invention why because they always do I thought you did a real good job making your Air compressor👌👋👍
Cool but how do u keep compressor lubricated and also from the lubrication escaping with the air? Cuz fridge compressors move gas freon with its compatible oil together.
The compressor intake inside the housing has baffles to prevent the oil from being sucked in with the gas. Lubrication is provided by splash within
the shell. If he wanted to he could occasionally add a small amount of oil through his air intake tube. th-cam.com/video/3Uwx-_VecHo/w-d-xo.html
I had to look it up, you had my curiosity up with your excellent question!
The compressor already has oil in it, hence why you cant use it for spray painting unless you have a oil trap.
I had used an oil bubbler on compressor the intake and a line dryer before the quick connect for my airbrush compressor
NEVER DO THIS!!! IT IS DANGEROUS AS HELL!!! THE COMPRESSOR IS AT RISK OF EXPLODING!!! A COMPRESSOR THAT IS DESIGNED AS AN AIR COMPRESSOR IS BUILT TO RETAIN THE CRANKCASE OIL IN THE CRANKCASE AND OUT OF THE COMPRESSION CHAMBER. A REFRIGERATION COMPRESSOR IS DESIGNED TO ALLOW OIL INTO THE COMPRESSION CHAMBER SO THAT IT WILL CIRCULATE THROUGH THE REFRIGERATION SYSTEM. WHEN THE COMPRESSION CHAMBER IS FILLED WITH REFRIGERANT, IT IS SAFE TO ALLOW OIL IN THE CHAMBER BECAUSE THERE IS NO OXYGEN PRESENT. WHEN A REFRIGERATION COMPRESSOR IS USED TO COMPRESS AIR, OIL AND OXYGEN ARE BOTH PRESENT IN THE CHAMBER, AND THE OIL COULD EASILY DETONATE!!! NEVER DO THIS!!! IT IS DANGEROUS AS HELL!!! THE COMPRESSOR IS AT RISK OF EXPLODING!!!
Ricambi Ariston per cldaie
Good Jobs MR
I just think it's awesome that junk can be turned into something so useful
To the TROLLS below, his welds are fine and he did all the needed deeds to build this little compressor.
It won't blow-up, or implode, if properly maintained.
A standard, 1/4" water "drain cock" should be tapped into the bottom of the air tank so water which *WILL* collect can be drained regularly. (If that was done and I missed it, sorry, but don't recall it).
This is a nice, well made, quiet little compressor.
A fridge compressor uses oil (spec. automatic transmission oil) which helps it to draw propper vacuum and makes it be quiet.
BE WARE! Because they run on oil, you cant drag this thing around, operating at odd angles. It must be flat when you use this compressor. Also... Pull the hoses from the compressor and drain (turn over, drain from the inlet/outlet tubes) and change the oil at about 20hrs service. The oil will absorb water (and some particulate) which reduces its efficiency.
These refrigerator compressors also make good vaccuum units and can draw almost a 30in vacuum ("ideal" vacuum level to remove water from a closed system). Just disconnect the rubber lines from the compressor body and add appropriate vacuum lines for a great vacuum device.
It's good for air conditiong work on cars, pulling a vacuum on a degasing tank, forming Kydex components, drawing vacuum in food bags/containers, etc.. These are strong little vacuum pumps.
I was an automotive tech for many years and a pneumatic repair tech for almost 8 yrs, fixed a lot of compressors and built a few of these along the way.
If you have the ability to make one, they are very versatile and, with right filtration and regulation, make excellent air brush compressors, as well.
Like it that it is not noisy unlike most other common air compressors in the market.
Good idea, especially when recycling become a world priority. Just a little remark for the lack of drain plug, discharge valve (the group cannot start again under high pressure) and the most important, a security valve.
Personnaly, for Fe/Cu connection, i never use teflon tape. I prefer anaerobic resin.
Good point about the recycling issue .In this world of consumer mass consumption and throw away goods , people have forgotten about how to rebuild things or tinkering . I grew up poor as a kid and learned a lot about mechanics and working on my own cars and whatever else I had to fix because we couldn't afford to pay for repairs or to buy something new.
Funny how the same people who used to laugh at me because I was too poor to have new things would later come to me with all their mechanical problems .
Now because of the lack of skilled labor and the lack of knowledge in mechanics or salvaging things we have a shortage of skilled labor in various markets like welding or electricians . All the kids are being pushed to learn about computers and IT when we really need skilled engineers and craftsmen (or women ) especially considering the fact that the infrastructure in this country is in dire need of a rebuild .
ഒരു കബ്രസർ കൊണ്ടു മാത്രം പറ്റില്ലല്ലൊ ഗ്യാസ് സിലണ്ടറും മറ്റ് വിലപിടിച്ച സാമഗ്രികളും ഒരുപാട് വർക്ക്ഷോപ്പ് ജോലികളും ഇതിൽ എന്ത് എളുപ്പം ആണ് ഉള്ളത് ?
To say the commercials are excessive is an understatement, I know you want to make money but they're headed in the wrong direction in my opinion. Great video I don't think the point of this video was to say buy one would be easier and cheaper but rather than what you're capable of building. Most people don't realize how much fun it is to build stuff and they're thinking how much easier it is just to buy one. Also some in countries availability is not as great as it is and others, mad respect for your ability, you did a great job.
When applying PTFE tape, always wrap in the same direction as the rotation of tightening.
Nice end result, but by the time you buy all the components it would be as cheap to buy a compressor out of a retail outlet.!!
No it wouldn't...most of the stuff is free, ; the rest wouldn't come over $50 on ebay, compared to $200 Aus these days for the cheapest one over here
He wrapped the ptfe tape onto the fittings in the correct direction, but it always amuses me when people release the tape from the roll like they're using sticky tape....it's much easier to control if you wrap it onto a fitting from the top side of tape, not the roll side...👍😜
Also.....bit of a concern...I don't see a PRV or NRV anywhere, and no tube connected to the unloader...gotta ask how long it's gonna keep working??...LOL
If you wrap the PTFE tape in the direction of the tightening it will undo the PTFE tape when it tightens your wrong.
Have the thread of the bolt facing you and wrap it clockwise then when you tighten it, it will be tightening the tape on the thread
I once worked with a welder who insisted that PTFE tape wouldn't work on black iron pipe. His problem was that in the past he had wrapped a joint in the wrong direction and the tape rolled out of the joint when he screwed it together. He was convinced that it wouldn't work, and nobody was ever able to get him to come around.
I've said this before to others in here but I'll ask here too: How loud is a running average sized workshop air-compressor? How loud is a running everyday fridge? That alone is a good reason make an air compressor out of a fridge compressor. I've thought about modifying an air compressor to use a fridge compressor and watched this video to see how it might be done.
Porosity welds just look so cool with all those little caves and canals.... I will strive to make my welds look this good too!
Great project and a good way to recycle. I would suggest installing a drain plug or your tank will rust from the inside. Thanks
Screw you
I thought the same thing, however this is very small and mobile so just tilt it to the original top valve and drain the water out that way.
Very well done. The. Compressor motor needs to placed 4 rubber shock absorber to prevent vibration. Thanks for the video 👍👍👍
I am a 40 year welder and I do not recommend a do it yourself person. Weld on a pressure vessel. The risk of explosion is too high. Get a certified welder to do that part and pressure test it afterwards
It would be better to buy an already tested air tank instead
You are wright!
Amen brother my cousin got himself killed with one of these
You only live once.
I'm surprised you did not notice he was stick welding Malleable Iron pipe fittings he runs a very high chance of the weld failing. More like when, not if it fails. At least I am out of range of that disaster
Richard, that was my only concern also. It’s a high pressure vessel.
Incorrect welding can compromise the metal’s elasticity.
very good sir! wow na wow!
Thanks bro
Were are you from bro?
u have not installed NRV in compressor air discharge line and water drain vlave at cyclender bottom.
NRV means nitro release valve?
refrigerant compressor got built-in nrv
Nice choice of tunes, bubba. You have good taste...
4:17 grandioso truco!, para rellenar la soldaduro. Excelente video!, gracias
Excelente uso de eletrodo sobre eletrodo! Bem observado.
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Good work.. But you forget the drain valve... Keep its done... 👏👏👏
you such a great inventor for this making silent Compressor useful work
I used to use a fridge compressor to evac commercial refrigeration units and domestic fridges and freezers before re-gassing them, an old fridge motor makes a fantastic vacuum pump.
Mr. DK DIY, a safety relief valve may be something you should consider. Also, a refrigerator compressor needs lubrication it would normally get from the Freon, does it not?
Ok v ery good I well copy it
That's the point: with this configuration, oil will keep leaving up to the point the compressor will get dry and fail.
@@larrywildman4381 I must have missed something. You actually WANT it to fail?
I like your video ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
I would personally avoid welding the pressure vessel if at all possible. You could do all of the same things using the existing port and a different variety of fittings. Just my $0.02 ☺️
Wow! Good job buddy! Keep safe! Full pack buddy. God bless
Thanks a lot bro
Hi. Thank tou for the vídeo. Can you list ALL pieces and conections? Will bem Very good
You are great for make without sound compressor used old item, how many price this prosess if I want this compressor
You have a great ideas. Please put your materials that you have used in this DIY air compressor. God bless you.
Perfect for light duty work!
Excellent job!
............ except there is no drain plug to remove water and condensation and there is no blow off valve or discharge valve. One more minor thing I might add is that you REALLY NEED TO LEARN how to wrap teflon tape around threads. That is NOT the way to wrap threads.
But other than that.....
BRAVISSIMO!👍👍👍
Very nice Amigo
Thanks Amigo 👍👍😉
The whole concept is really sharp! But the music has me ready to climb the walls. Luckily, I could turn sound off!
Very descriptable and showing the main parts to take into account, Thanks buddy.
Nice project , I'm curious of the psi it reached and if there is a safety valve installed.
How can we use air plasma cutting
This is a great job sir🤗 thank you sir , , i have an idea home made😅
Źle pokazałeś podłączenie przewodów. Ale pomysł rewelacja!
Nice job making it from scratch. A LOT of time could be saved if you bought a used air compressor for cheap and just replaced the electric motor with the compressor motor, but you would still need to find a way to replace the oil that is lost from the compressor. You might want to use a smaller 2 gallon tank, due to long refill time. It would make a nice airbrush compressor. Pretty nice DIY though.
Typical answer....... well I can do it better lmfao
muy bueno desde República Dominicana
Good project, but the only problem I have with it is not using a respirator. Welding galvanized metal produces a toxic gas. FYI
excellent thumb up only as a suggestion it is very important that you have a threaded outlet at the bottom to purge the water that condenses inside the tank since otherwise this water will cause corrosion inside the tank
tank ... but excellent video !!! great skill!!!
great compressor and tank quiet nice info very informative video a good thumbs up video
Thanks Pete Peterson
@@MrDKDIY no no thank you have a good veterans day
I personally think that for a home made unit you did an excellent job! The remark that teflon tape isn't recommended for air fittings is not quite correct! I managed an automotive wholesale tool and equipment warehouse and we built air compressors from 1/4hp up to 25hp,
Electric, gas and diesel driven on 20 gallon tanks all the way to 240 gallon and we used teflon tape for all of the connections and we never had any complaints from customers that any line was plugged or leaked. All units were fully ran and tested before leaving the warehouse. I would make one recommendation though and it was mentioned in another reply, that you need to install a drain cock in the bottom of the tank to facilitate draining any water that accumulates in the tank and should be done on a daily basis when the compressor is used. One more thing, any welding done on a tank deteriorates the integrity of the metal which will cause a failure at the weld. However I don't think it's a problem that you have to contend with, with the pressures that you will be dealing with on that unit. Good luck and keep the Fantastic Videos coming, they are enjoyable!
I recommend laying out _all_ the fiddly bits -- perhaps on the melamine -- in their expected relationships _before_ begininning the assembly. If possible, treat sub-assemblies first without disturbing the lay-out, add the completed sub-assemblies back to the layout, and progress through until everything that can be done 'in the air' is done, then hook it up to the big iron. The countrr-top layout doesn't _have_ to use the actual parts (e.g. the air line, the electrical lines), but some proxy would help tyros to grok the recipe and the process.
I always wondered how Harbour Freight Compressors were made! Thanks a lot.
😂
No pressure safety valve set for 110% of maximum pressure...in case the pressure switch failed to act...
An over pressure horn will be an advantage..
An air filter at the delivery side ..
Very creative, good job making it look like it was bought. That is a great idea because everyone hates it when the compressor turns on.
He fergot add a drain plug to it fer any trapped water or liquids
Without a pressure relief valve this is an accident waiting to happen. These compressors can do 600psi - 800psi. Looking at the P12TY compressor specification the best you`ll get is 1cfm. You do need to replace the oil that was in the compressor because when it comes Into contact with air and moisture it will turn acidic and eat the copper motor windings. Your compressor will need 400ml of a non foaming mineral based hydraulic oil. Lastly, these compressors shouldnt exceed a 50% duty cycle or a case temperature of 100 deg C as it will degrade the oil. The compressor has an internal thermal trip to protect the windings but the trip rating is based on refrigerant not air. If the trip operates, you can be sure you are not doing the compressor any good ;)
That's what the spigot was for in the middle front.
He did reuse the shutoff valve. I guess he could turn the tank upside-down and open the valve to let the water out. This is the least of his worries, compressor lubrication is the bigger problem, not to mention it dumps air rather quickly and the compressor cant keep up. For a little over $100.00 you can purchase a 6 gal. commercial grade compressor at, Harbor Freight.
Iff you drain it the oil ccomes out with it and will kill it
yep, my only issue & I have built many compressors from salvaged compressors and components. but have also had 1 when I was very young fail due to water inside near where leg was welded at factory. plus got a few free small ones that had rusted out tanks I rebuilt
so add a simple drain plug of some sort.
wow amazing😍👍😎 air compreser
👍👍😉
Very well, Manoel!!!
Excelente trabajo también sirve para pintar con pistola disculpa
Great build minus the air/fuel filter! Perhaps use it in conjunction with a water trap but by its self I don't know
air intake needs a filter to keep the dirt out of the compressor.
Good job bro nice i love it good for my workshop macky marikina city philippines.
Lol this compressor is for a closed loop it is ment to pump a semi cooled gas round the has has a high oil content to lube the compressor so now with no lube and pumping uncooked air you can see.where I am going also if you have welded.the tank it can make it brittle if the tank cracks when full it's like a home going off compressor tanks are heat treated after wielding to stop this then filled with water and then tested to 2x max pressure
Computer air can be very dangerous it's not to be made at home a much quicker safer compressor can be purchased for under £30
lol
Hello is an interesting project. I have one question, if the piston is not lubricated and works only on air, will it be exploited? Will it be durable?
These compressor types normally function within a closed-looped hermetic system, inclusive of oil.
The reason as to why a refrigerator must not operate before 24 hours have gone by, when the refrigerator is layed flat on one side, is because of the oil needing to drain. Otherwise, the compressor's motor will overheat, through attempting to compress the refrigerant oil of which has entered the compression chamber. If this comressor is therefore absent of any oiling, it will surely seize within a short time
Nice project. I would of built a cart for the tank and motor to sit on, instead of welding on the tank, less stress on the tank. 👍
Nice hobby$$$
Bought a 2nd hand portable compressor £20 on Facebook.....saved me a lot of hassle 😉
1 side for air, 1 side for vac best tool in the garage!
Great idea and well done bro
Great repurpose of stuff that would end up in landfill. Inexpensive build for something that would cost around $150 (IMO).
Few questions -
How do you handle oil for the compressor?
What is the max pressure you could charge the propane tank to?
And, how long does it take to charge to 150 PSI?
Thanks!!
Hi, I admire your genius , but, find the video lacking in information on the items used outside of the fridge bits, ie, parts, sizes etc. Don’t stop showing us your brilliance, as an engineer, I admire you.👍
Great job boss , only one question , how does the compressor get cool when it runs little longer ?
It is oil cooled. That thing can run for a loooooong time. I'd say its pretty quiet to run also
Need to release pressure in the hose to connect to the tank so the pump can restart to pump again easily, if not the pump sometimes can not restart to pump again when pressure inside the tank is about 2 bars (usable pressured ).. I have built 2 of this and used up to 10 years now, very quiet compressors always use them at about 1- 5Am no body else complain noisy !
can you tell me what all parts I need to build like that compresor
Nice very efficient
👍👍😉
Why did you overlay music in the background? We wanted to estimate the noise level.Good Job nevertheless!
it uses a refridgerator motor so the noise will be like your fridge/freezer, obviously
I hope I can do as well and be like you, I wish you and everyone a good time and happiness
Nice but Compressor is slow to fill the tank it'll consume more time
Great idea 😊 Amazing DIY Compressor. I'm your new fan from Philippines for Making DIY things 🙏 Salute you sir
Thanks a lot
@@MrDKDIY Your welcome sir. My hobbies is DIY Everything but no have a powertools to use for DIY like you use too😑😢
Wow Beautiful unbelievable please keep it up.
Certainly looks impressive. Can you use it for paint spraying? 👍👍👍
Good idea, but without lubrication, it won't last long. Refrigerant compressors are lubricated with the lubricant in the freon. Without freon, they don't get any lubrication.
So you're saying that all compressor 's are lubed by freon???
Crear es muy satisfactorio y mostrarlo a los demás produce alegría hice uno y me quedo genial te felicito Amigo
GREAT JOB!!!
Que de mais para vc reduzir o barulho do seu compressor, o aconselho pegar borrachas e colocar nos pés antes das arruelas e após encaixar o motor coloque arruelas e aí sim a porca.
Parabéns adorei seu projeto
yeah some human are so creative i belive.
Thank very it has been educative
Thx 👍
Great job bro,keep making
thanks bro for Nice comment :)
You put a lot of work into this project.
Should have bought some rubber grommets to set the air compressor on the four bolts that way you wouldn't have to listen to the vibration I built one is very quiet I used a pancake tank
He did. Watch again
Actually, simpler would have been to cut the mounting plate _out of the fridge,_ -- complete with damping grommets -- and weld _that_ to the tank. However, lacking the original mount, it would make some sense to install the bolts, nuts, and washers onto the base of the compressor, adjust for height and level, on a level surface, then plop the whole onto the tank, tack, then weld all four bolt heads sequentially.
I'm totally new to repairing tools like a compressor, but my compressor keeps tripping the breaker. So I'm being forced to learn. I start out replacing the start capacitor. Then had to replace the switch assembly, manifold, gauges, everything. Because the OEM switch was discontinued. Still doesn't work, in fact it threw sparks out of the motor. At this point, I'm kind of lost. I learned about cleaning the contacts in the motor and I'll try that next. What would you suggest? I watched your video and got questions. What did you use for a motor to run the compressor? Also no capacitors (no motor, no capacitors?) Would of rather been there while you built it than watch the video. Just to much that I had questions about. I did enjoy the video though. Thanks.
Coil on the motor probably making contact with the inside of the metal motor casing.
It's a compressor from a fridge he recycled. That's the motor.
Faltou apenas um detalhe, a válvula de drenagem, porém ótimo trabalho.
you doing will.
we love you.
Thanks a lot
THAT SO COOL
Good job!!!
Tnx