I was partially relieved when you mentioned that your compressor is of the oil-free variety. Care must be taken that all components (fittings, hoses, tanks, etc.) that come in to contact with compressed O2 are cleaned for oxygen service. Failure to do so can be catastrophic!

Nice to see a fellow Aussie getting about it.... top job bloke

So about 2 years ago I wanted to start blowing glass so naturally I needed more of a torch than just a propane torch. I discovered oxygen and as I was learning about the fundamentals, I stumbled upon this video. I was amazed at how simple yet genius your whole set up was. Like you, I've always wanted to be self sufficient. Well today I finally picked up a free concentrator and I'm so stoked. You inspired me and I really appreciate it. Cheers

Mate!! You've restored my faith in young Aussies!!! Thanks for sharing

You shouldn't use propane tanks unless you've unscrewed the valve and washed them out first. The scent they add to the gas is oil based and can pool in the bottom. It may not be a problem since it's VERY hard to get an ignition source inside of an air tight cylinder. Even still it's just bad practice to combine a fuel with a pure oxygen source in an air tight pressurized container.

That's a genius idea with the bag a kind of buffer tank.

Fantastic. I was wondering how to solve my problem and here we are. Thanks

Thank you, great ideas presented well. I bought a used O2 concentrator a couple of years ago for this purpose but couldn't think of an easy way to pressurize it. I can work with your idea.

That bellows setup is ingenious.

Excellent contribution, thanks for posting.

F'n awesome!!! I bought a 5 litre/minute oxygen concentrator 2 weeks ago and have been thinking of ways to compress my oxygen to higher pressures that I can store for later use and use for studying/cutting as well as glass blowing. I had been searching around for KZfaq videos or guides on google but was unable to find much until now! Thank you all look much. Fantastic idea. I know what I'll be doing tomorrow on through the weekend.

Very nice how-to video appreciate your time and effort thank you

Great Vid! Stuff has become so expensive , I am ditching the bottle, looking for a concentrator. Pressurized O2 has been beyond my scope. Thanks ! This is very encouraging.

Great idea. A couple of comments anyone that wants to attempt this should consider. 1) LPG tanks contain residue of Ethyl Mercaptan which is what makes LPG smell like LPG 2) consider getting an empty oxygen tank on gumtree etc. plenty around, many for free 3) You should connect a vacuum pump to your circuit. Easily done with a refrigeration manifold and pump. You should not contaminate the pure oxygen with the air in the pipes and tank. 4) OXYGEN is explosive when it is in contact AT PRESSURE with many oil and greases including SILICON oil. You have used a oil free pump which is excellent, however this would also be vacuumed before taking the oxygen 5) LPG and oxygen is not as dangerous as ACETYLENE. If you ise acetylene connect FIRE ARRESTORS to both tanks

Dude this is awesome! Can you make another video with a step by step please? I’m looking for a way to do almost exactly what you’ve done there and I want to copy your method

The only video I’ve found helpful too what I’m trying to conjure up

You the man. This is awesome!

If you can score a Homefill oxygen compressor you can refill high pressure cylinders. I use medical cylinders for light mobile LP cutting but currently transfill them from larger cylinders (oxygen is cheap enough commercially and I've two gas suppliers within 20 minutes). Homefill compressors are often used with the (ripoff priced) integral regulator medical cylinders which are not repairable but you can harvest their QD male if desired to connect to the compressor then buy a whip and proper fittings for your cylinder. I use a Tee so I can use an ordinary oxygen regulator to monitor pressures and dump the line after the cylinder is full. Pilots use "transfill whips" similarly.

That is brilliant Mate! I have been looking for some method of doing this and now I have found it. Many thanks for sharing. I was concerned about compressing the Oxygen until now, the diaphragm style compressor had not occurred to me until I saw your method. I have old oxy bottles thrown as they were out of service for full pressure, however still fine for a couple of hundred pounds or so. You have given me an idea however on how to make a piston type pump that is isolated from oil of any sort that will pump to much higher pressures. Thanks heaps for sharing this GOLD! John, Sralia mate.

One word-- BRILLIANT!!

Thanks, great idea

Thank You Bro . looking forward to cutting steel and heating metal parts for the shop

dude, your the end of a leg (legend), thank you so much for this idea, i am for sure doing this, so fed up with buying bottles all the time to, thank you bro.

Cool video. Double thumbs up.

Now that’s cool ingenious!!!!

Awesome bro thank you 😁

Awesome thinking love this. It good to know things

Awesome video thank you

Wow. Thats awesome. I have an O2 Concentrator I bought for $5 from an auction (5l/min). I verified it by blowing it on some burning chopsticks. Ive got MIG, TIG, stick welders but not Oxy/Acetylene (have the equip, but no tanks). I only need it to get something cherry red every so often. Im thinking about this route.

you are very clever. gday from California

flashback, most important. your good workshop can blow up without it.

They also make concentrators that can put out up to 10L/min. I have 2 patients at work on them.

Hi, thanks fo the video... Was looking for the link to the hose clamp video, but it's not in the discription. I liked and subscribed and will check out your other videos.

Thank you sir!

Very awesome!!!!

I have a 10L unit, reckon it would be enough to cut metal with?? I found it and a 5L unit on the side of the road and both work just fine. The 10L even has a battery backup built in that still works lol. The silica gel beads are def a good idea. But the compressor and tank idea were awesome thanks.

Nice 👍 very smart.

Some of those generators have output rating at 20 psi so you can connect directly to the torch. I've been able to braze copper tubing up to 1 1/2" that way

Nice one 👍

Amazing !

Just my 2 cents. Long time auto mechanic my welding gas supply guys once told me Just. Even. Opening up the oxygen tank valve too fast can’t cause an extreme fire as it rushes past the regulator and mixes with oil ect forget exactly the comment , but tread very carefully those guys know what they are talking about at the bottled gas supply houses.

That bag deal had me convinced you're too smart by half. But the desiccant in the compressor tank fixed that. :) (use an inline on the output - I know you figured it out.) But it does beg the question of how the water got in there. I found about a dozen of those machines in the park trash bin about that 2017 timeframe. They were from a rental house.

Peter Thomas-Hall; Tyvk 4 sharing ur ideas! I have never seen desiccant used in quite that way before; my background is in airbrushing, and I live in a very humid area, so a moisture trap has traditionally been sufficient for my use, since I haven’t actually been storing gasses. So, I have to ask if a moisture trap might work in a setup that’s similar to yours; and also, how do u maintain the desiccant that u use-does it just get emptied from its’ container and re-dried in an oven, like a person can do with silica gel?

Awesome!

Glassblowers been doing this with home fills for years. Great video

Brilliant.

I believe that you believe that it will cut metal are you ever going to make a video demo please when you have the time that will be awesome good day mate cheers

Medical grade O2 cuts so much nicer than standard welding grade O2.

Bravo........tire tube Simi........cool it with dry ice......make liquid o2........cheers

THANKS FOR THE VIDEO!

Do you have a video showing how you made the tilt switch?

Ingenious.

Thx.

Smart move with the tilt sensors

Hi Greate video. I like to make a system like that for glassblowing. But why do you have the system with the bag? Im not sure that i understand it right. Are you filling the tank on the generator with oxygen

It may be oil free, but I wonder what effect the oxygen has on the other components of the compressor. Some have polymer based diaphragms.

PETER: QUESTIONS: I have little experience, unfortunately, so I apologize. 1. I heard somewhere that air compressors are often 'leaky', compressing some (of course) but otherwise losing something like 30% of the air one tries to compress. Is this the case, or was I misinterpreting what I thought was going on? Is it 30% backflow and therefore inefficiency, not leaks proper? If it does leak said gas, does it matter for these purposes since it's just oxygen into the air from whence it came - just a little wasted energy, nothing more? 2. When I look at compressors they always seem to have a large open grill, but you seem to have hooked up tubes. If I remove the grill part, will there be a port where one can hook in a tube (and is that how you did it)?

Nice!

Very smart

Would those HHO generators work in this case if you couldn't get your hands on a medical oxygen maker?

Is the on/off switch like a bi-stable vibrator circuit so when the switch to start compressing is activated, allows power to flow to the compressor, compressing the oxygen into the tank, deflating the bag eventually hitting the off switch, and cutting power to the compressor side of the bi-stable? Otherwise, the compressor would kick on, compress some oxygen, deflate the bag just enough to unpress the switch, and rapidly repeat itself. I guess im just interested in the electical side of how you turn the compressor on and off. Kinda wrote a lot there and I hope it made sense.

Do you know all the models of oxygen fill machines a private user can buy to refill their oxygen tanks for their torch?

I saw someone on KZfaq that was making their own oxygen and hydrogen from water and was compressing them separately with like 12v compressors and a similar bag system

Can I ask you why are you not connecting the big cylinder to the compressor all the time to fill it up?

Can i use it for fish tank?

How long does it take to fill the compressor tank

thats awesome

Is it important to use a dessicant if I'm refilling O2 tanks for agricultural use? I use them to infuse irrigation water with O2. Thanks!

Can you go in depth on the electronics please

Make a much larger bag and put a massive amount of desiccant on the bottom of that. Should keep it from reaching the compressor.

Does the oxygen concentrator have enough output to supply the intake of the compressor without causing problems?

Amazing Dude! … how long does it take to fill up that big tank?

Hope you have flashback protection

what line presure do you get out of your oxygen generator pete?

Can you use this same setup to fill a "E" Size Aluminum 680 Liter Oxygen Cylinder at 2200 PSI? what kind of oil-less compressor is needed? the dedicated oxygen compressors of this capacity cost $5000!!

Make sure to use flashback arrestors if your oxygen has too much other chemicals May flashback maybe you scuba pump 2 high-pressure cylinder

wow what a great idea. I was actually a little confuse how you draw bag of oxygen into air compressor, until i realized you have another tube coming out of the bag connected to the rear side of the compressor. When compressor kicks on, compressor uses it own power to suck the oxygen from the bag into the tank and stored it there. All make sense now~~

Just what I've been looking for! Does it work with methane - oxy torch?

Hi, I ordered an oxygen concentrator for a small torch, I will use it at its normal pressure. The configuration is propane-oxygen, according to tea should I use a protective valve on the pipes? The low pressure of the machine (max 1 bar) on the oxygen line could create problems with the safety valve? A thousand thanks.

Its great!!! Sir can does the oxygen output from the oxy generator continously? So that i can directly put it in a reservoir tank.. Instead of bag? Thanks

Brilliant, thanks! Have you used HHO generators or torches, don't know how they compare but I've heard they're great! Cheers!

what type of desiccant are you using for the air filter and that of which is inside the compressor? just straight silica gel, zinc?

Can u help me find a oxygen generator?? Can not find a cheap one

Clever bag system. Just a thought, putting oxygen in a propane cylinder, even if there is a tiny amount of propane left i.e 5%, would constitute a bomb.

How much are them machines

I hope you carefully cleaned off the propane tank from any gas, grease and paraffin decomposites inside? You probably also know that pure oxygen (esp. when compressed) tends to react very impressively with all oil, grease and alike stuff? You are lucke nothing bad happened so far. But - believe it or not - i have similar ideas :-) I guess oxygen at 5 or 10 bar is not as agressive as it is at 200 bar from industrial tanks. The regulators can suddenly explode when opening the valve because of slightest contaminiations with grease or just dust and debriss coming from inside wear! It is rare but such incidents have been reported esp. from aluminium regulators. So take care!

Where do you connect the hose coming out from the bag of oxygen to the air compressor?? I don't see how the oxygen goes from the bag through the compressor into the store tank . Please help !!!

Thank you sir , do we need flashback arrestor when we use oxygen generator and gas for soldering jewelry ?

awesome bro, any more of those available. the cheapest one in adelaide is like $2000.

So how you get the oxygen from the concentrator to the air compressor?? What kinda fittings you workin with??

Is there any chance the compressor might create a spark and blow itself up? Might want to be on the other side of a block wall while the compressor is running just in case...

Are you not concerned about any potential sparking when cylinders in the air compressor moves?

What did you do to connect the oxygen concentrator to the air compressor? I have a similar air compressor to you but it doesn't have any sort of air input, and I can't find any compressors that take an air input for a reasonable price.

I was warned by the company that built my defibrillator/pacemaker that is in my chest that I cannot weld any longer . A 3000-5000 deg. Flame is plenty for working with sheet metal. You mention 5 L/min . Isn’t that 300L/hr ? That would be a huge machine that’s used in a hospital setting to supply many rooms and patients The home machines are like 150L/hr max right. ?! So which model did you happen to purchase ? Great video. I have been wanting a small portable oxypropane setup for thin sheet metal. I am having to by no choice , archaic or not people are still building chromoly air plane fuselages with it . Airframe used to be nothing but. They did so and still do 75 years later. LoL

good .gues👍

Dive buddy of mine tried generating his own breathing gas (nitrox) and had not O2 cleaned his equipment properly and nearly burnt down his property. Anyone who thinks that this stuff is safe is wrong, but it will be okay until it is not. That is when you find out why it needs treating with respect, and why there are no cutting corners.

Have you tried cutting with it. To my knowledge you need nearly pure oxy for cutting as medical grade is not pure enough. Can you please let me know if you have had luck cutting with it.

What is the name of that oxygen generator? Is it a "consintrator" is it producing hydrogen as well? You said, "90% oxygen"

I think you forgot to post the link to the video where you show how to make the hose clamps.

dawm, you're a hack of a clever dude! and the wire hose clamp tooll is awesome, too!