The best anagram to remember is POOP. When turning on the torch it's propane first then oxygen. Turning it off is Oxygen first then propane. So just POOP it!

Thank you Sunflower, yes indeed. Ventilation is a very important factor in soldering set ups. This video was very specific in it’s function and we left ventilation to be covered in a few of our other solder set up videos. But your correct, thanks for mentioning it. Mark N Tech

Thanks so much Rio : D I was kinda nervous about doing this install for my garage workshop but your video helped me feel more confident about these dangerous additions to my jewelry making squad.

Good clear instructions, as usual with Rio. Thanks.

Great help and easy to understand. Thank you

Excellent instructions! Thank you.

This was a very thourogh video! Thank you!

Thank you for the video!

Pretty down to earth presentation. I liked it.

excellent explanation.

Thank you Rio, very useful.

The Smith regulators I use are essentially same for Propane and Acetylene the only difference is the fittings. I hope this helps. Mark Nelson

Super helpful. Thanks!

Great video, but I have just a propane torch connected to a propane tank that has a needle valve to regulate the type of flame. Do i need a flashback arrestor for this too?

Hi Sealy We have a video for that on our “To Do” list. But it’s very easy to set that torch up and we can walk you through it over the phone or via chat or email, whichever you prefer. Mark N Tech

Actually, first step should be "blowing out" the tank valve...prior to attaching regs, crack each tank open briefly at the valve, to blow out any dirt or particles hiding in valve. THEN attach your regulators...also, best to open torch valves first, open reg line valve and open reg tank valve BEFORE you open tank main valve. EVERYTHING OPEN, to allow gas to pass through reg, line and torch to blow out any foreign junk in line AND to prevent air in line from compressing. THEN, when you hear gas flowing out the torch head, start back at the tank reg valve to set to open. Then, set the line valve to about 4 lbs. Then, and only then, close the torch valve, with the line free and clear and pressurized. Repeat for the other gas line, oxygen, e.g. W this procedure, you're flushing the system of crud, and also preventing compressed air in the lines...When finished, reverse the procedure--close TANK valve first, then purge lines by closing tank reg valve, then line valve, and finally TORCH valve, so no gas remains in lines.

Thank you so much

Just another question pop out my mind. Aceylene torch is good for soldering small jewelry, like earring and rings?

Thank you, Mark. You recommendation is very helpful. I have another question for you. Where I can get boric Acid and denatured Alcohol ? Does RIO carry them?

Hi Barbe. If it’s possible we leave everything set up. We’ll do our soldering and when we are done for the day we’ll turn off the tanks and bleed the lines. To bleed the lines we 1st extinguish the flame, 2nd turn off the tanks, 3rd release the gasses from the lines ( this will allow the needles to drop) and 4th release the pressure on the pressure knob by turning it to the left until you feel the tension let up. I hope this helps. Mark N Tech

Thank you for the video! It really helps calm the nerves. I’ve been trying to find info about appropriate eye protection. Are IR and/or UV glasses necessary for oxy/fuel setups? I’m a jeweler, but looking at some larger pieces that may require brazing. Thanks.

Your welcome Rich and thank you for your kind words. The soap solution we use is a great solution as it’s safe to use on the oxygen as well as the fuel gases. It’s one of those things where you have to be safe when your being safe. Thanks for watching. Mark N Tech

very helpful

Hey Sealy, The torch does come with set up instruction but if you any questions at all do give a call. We can do help via email or online chat but in the case a call is the easiest way to help, just ask for tech support and any of us on the team can help. . It’s a very easy torch to set up and shouldn’t take anytime at all. Very exciting, I think you’ll love working with it. Cheers, Mark N Tech

thanks for sharing !!!

Hi Sealy We do carry the boric acid # 704096, the alcohol is easy to find in a local hardware store in the painting section. Mark N Tech

setting the pressure. You shut regulators down or turn them on ? i'm sure you met down and then turn them up until they reach pressure you want. I want to get one but i just want too be sure it's right.

Hello, thank you for the video. Where can I get one of those carrying outfits? Thank you.

Thank You bro

hey brett propane here in oz mainly for heating there is an abunt amount of accetalene

Is putting the flashback arrestor at the tank or torch side more safe? Thanks.

Thank you!

Hi, where you left the oxygen and propane tanks? Is safety to have near you?

nice videomay I ask, at the end of your video, you have what looks like a foot controlled spark generator ??where can I buy that here in the USA ?? Brand name, type, any help appreciatedthanksJohn

What size gas & oxygen bottles are you using there? How long would they last 1 person hobbyist? Thanks

Where can I buy this trouch kit at

Mark, Thank you for all your messages. You are very helpful. I ordered a acetylene torch from RIO and also oredered two extra tips as well. However I got my 40 cf tank from a local welding store. Do you know if safety set up instruction will come with my torch order or not? If not can you e-mail me, walk me through it. My torch will get here tomorrow. Can't wait to set it up. Thank you, Mark.

Hi Mark, I am watching how to set up a proane/ oxygen torch by you. However Lately I am thinking to get a an acetylene /atmospheric torch from RIO. Can you show us how to set up Acetylene torch? Thanks, Sealy

good video perfect

@gm556 A 'pop' may occur if you reverse the order. The pop throws carbon soot back into the torch, which may partially plug the gas passages.

I noticed your using an acetylene regulator on a propane tank. Has that given you any problems?

Other trainers say to only open the propane or acetylene about one turn so it is easy to shut off in an emergency. I think opening the valve all the way is supposed to seat the valve open so there is less possibility of a leak. What do you think?

That was a great video, it explained things slowly so it was easy to understand

Thank you Jerome. Mark N Tech

Is this a Smith Little Torch? If not, is the setup the same for the Little Torch?

Julia Peralta: Not a dumb question at all. Propane is a type of LPG. Here in the US the terms are not interchanged much, most refer to propane as propane. But you will be fine using what you can get locally with the little torch. I hope this is of some help. Mark N Tech

I have two smith regulators both are pol fittings both lpg bottle and oxygen bottle are pol fittings can I use the smith regulators for both. Thanks

Where can i buy those regulators

Mark- can you make a video about safely setting up and using an Oxy/ acetylene torch? I bought one from you guys more than a year ago and I still don't know how to use it!

Hi, is better to have differents tanks for welding and other for melting?

Hi Marc, It doesn’t work to just use the propane on an Oxy/propane system, it would be like using a candle to solder with and the flame won’t be hot enough. The propane has to mix with oxygen somehow to produce a hot enough flame for soldering and these system do that using compress oxygen so you’ll have to use the tank. The Smith regulators we sell can be used for both propane and acetylene, you will just need to make sure you have the one with the fitting for the tank size. Mark N Tech

Thanks so much for the demo. I just purchased a Smith Little Torch and I was told I could use the Smith pre-set Regulator for my propane tank. It's small and doesn't have the PSI dials. Is that going to work for me? I do have a Smith Oxygen regulator like the one you have in the demo.

Good torch setup procedure but it is also important to emphasize or even mention the importance of proper ventilation when using any torch.

I have used cutting torches since the late 50s.Back then it was a rule only open the acetylene or any other gas just a crack as long as the gauge moved just in case a hose breaks so you could shut of the bottle as quick as possible.Opening a crack should be enough to get a good reading of your tank as it will decrease as you use up what ever gas you are using. I never used the gauges you have so I might be all wet with these modern doodads.

I've read my manual...and I still turn off the oxygen first to avoid the loud pop. I work only with oxygen/acetylene. I don't use propane anymore.

Hi Rio Techs - I have a meco midget propane/oxygen torch and uniweld regulators and I do have flash back arrestors. I thought I was doing this correctly but I think I may have totally ruined the oxygen tank regulator because I thought that it was turned off enough. So when i opened the oxygen tank which does not open all smoothly like the one in the video, the gas hissed out loudly and I shut off the valve to the tank. Now I have the regulator properly turned off as well and the propane tank and regulator. However the oxygen tank still reads way up at 20 and I tried to redo the whole thing the right way but as soon as I opened the tank and began to turn the regulator clockwise the needle began going up even further. It's really hard to find someone to help me with this. I studied jewelry making and worked a lot with torches but was never taught how to set one up. For safety sake I called the local airgas place where they sell welding supplies and asked if they could connect me with someone experienced who could come to my studio to help me set it up. I hoped some employee there would want to make some extra cash but they said to bring it in. I didn't want to lug my torch and tanks all the way over there so i read the directions, and tried to do it myself. mistake I guess...

When I open the propane and oxygen the valve dosent move. Any advice?

I feel better knowing this is something I can do in my living room.

Hi Everyone Thank you for the comments, I will try to address them all. The set up for Oxy/Act is the same as it is for Oxy/Propane. For the Little Torch the settings are the same too. And Keneyed209 is correct, you should make sure the fittings are clear from debris, these were new regulators and fittings so I neglected to mention that. When setting the pressure, you start with the regulators turned off and by turning the knob to the right you set the pressure. Mark Nelson

I recently used a friend's little torch (she has an amazing set up with piping and large tanks outside) and her torch was hot to the touch. I've never experienced that and now I'm freaking myself out thinking about it. Is it normal for the hand piece to get hot when soldering?

Hi Sealy, you bet, the system comes with the smallest tip which is great for earrings, we do recommend getting at least 1 maybe 2 larger tips to cover the larger items. Mark N Tech

Hi I am from Australia. We do not use the term propane over here. Is propane basically LPG, which is the Australian term I think? Can I use LPG instead of propane? Thanks, great video!

جيد

@raintree27 it's fundamentally the same thing

Thank you so much for your informative video. Hope your wife was cool with you doing that in the house.

6:26 it's still bubbling, lol

I was taught to turn off the gas first so the gas don't soot up the torch when it is going out. And sometimes a pop than can dirt up your orings. Like an underpressure torch pops when it overheats. If you turn off the gas first the oxy blows out the flame clean with no smoke. Remove the tip and see if it is black.

Are acetylene regulators OK for Propane? Are propane regulators OK doe acetylene?

I saw two major safety mistakes in this video. Never open flamable tank valve to the end. Crack it open just to get full pressure on gauge and stop there. That's usually about quarter of turn... In case of emergency fire you are able to quickly put out source of flammable gas and stop fire. Same thing stands for putting out a torch. Always shut the flammable gas first, then oxygen.

This might be a dumb question but is LPG the same as propane? For the look of that tank in the video is what we call LP Gas in Mexico, I've called many gas companies asking for Propane tanks but they tell me they only sell LPG. I understand LPG is a combination of Propane and Butane. So my question is if propane and LPG are interchangeable terms in the US? I want to make sure I buy the right gas for my little smith torch.

Nice video. SAFETY TIP: I was taught to turn off propane/acetylene first then turn off the oxygen so the oxygen can clear the line of flammable gas preventing a fire inside the torch that cannot be detected and will travel back through the gas lines - it is this scenario that makes flash arrestor necessary. Oxygen is an oxidizer and will not burn therefore turning it off last prevents a fire inside the torch and lines. I have a few years exp in the welding supply business and have seen bad things happen to great people when this is done backwards. Tired, hot, end of a long day, turn the wrong knob first, boom...

So what is the regulator pressure for the oxygen???

The real propane cutting torch

Are you sure that oxygen is turned off first ? I've always heard the fuel should be the first.

Hi. I moved from Oxcy/Acet to Oxcy Propane because it's far cheaper but I dont have a gauge type regulator valve. Just a knob with bar pressure markings on it. I thought this was so because Propane is a liquid not a gas. Could I use the acetylene regulator with Propane then?

The notches in the nut indicate the left-hand thread.

Is it okay to leave the tanks on if I am coming back to work the next day? And I would also like to know how to shut off the tanks. is it shut off Oxy tank then shut off propane tank, bleed the line, then release the pressure?

Hi Dariusz879, You won’t need a flash back arrestor for your torch set up. Since there isn’t another tank, just the propane tank, you don’t need it. And adding one may hinder the operation of the torch. I hope this is of some help. Mark N Tech

That setup seems ideal for jewelery soldering

Does anyone know where to get a propane regulator with twin gauges? Searched for hours can't find one

I think my oxygen regulator for my little smith torch is broken. I have the T knob pressure valve open and its still sending oxygen through the line. Is there as way to fix it or do I need to purchase another one?

What's the psi for the oxygen?

Hi. This does indeed happen to be the Smith Little torch. Mark N Tech

How many ft lbs should the fittings be tightened to.

Thank you for the video, just to dispel the hearsay, the Oxygen supply must always be the first to be shut off, because pretty much anything will burn in an oxygen rich environment.

What is the correct pressure for oxygen?

You ALWAYS turn off the OXYGEN 1st ! People that say you should turn off the combustible are simply and dangerously plain IGNORANT and know NOTHING about flammable and explosive limits. A propane-oxygen mixture become explosive when the propane concentration fall between 2,1% and 9,5%. If you 1st turn off the propane, at some point you will have your torch filled with an explosive mixture that is going to explode as soon as the gas flow drop below a certain rate. That's the loud "pop" stupid people hear when turning off propane 1st, and that's exactly what start FLASHBACKS. So you always want to turn off the oxygen 1st in order to avoid to reach the explosive concentrations. Same goes with acetylene, which is explosive from 2,5% up to 81%. Again, you want to turn off the oxygen 1st to get above that 81% before the gas flow rate drop to the point where a flashback can be triggered. Enjoy welding.

If I switch from acetylene to propane, do I need to buy a new hose?

Can you set that up indoors, in the basement or does it always have to be outside ?

Why are the flashback arrestors not mounted on the torches?

I've never dealt with torches beyond what just connects directly to a propane or butane tank so please forgive my ignorance if im mixing up my trades... But wouldn't you want to be using PTFE? I wouldn't want to put that much torque on brass connectors just to get a seal. However, as that I've 0 experience with this type of setup I appreciate the video!

How about using a Oxygen Concentrator and a disposable propane tank,for safety?

Do you want to sell

Just a small point and I have to say I have never used such a small torch but I was always told to turn the Fuel gas off first and then the Oxygen. So I did a check with my torch supplier and as I said, on closer, fuel gas then oxygen. Maybe it is different for these small torches?

where can u buy this mini torch??

I'm self teaching jewelry , and I've only gone through my first tank of acetylene/oxy. I'm ready to get a refill... but now I'm totally nervous about using anything! The more safety research I do, the more Im freaking my self out. I chose acetylene because I read acetylene was safer in the home because if there is any gas floating around, it will dissipate, as apposed to propane that collects in a low laying ball of gas, meaning propane more dangerous. But now I see them say acetylene is more dangerous. Some say to turn the oxy off first in the torch, some say the gas!! I'm turning oxy off first, the gas, then it pops! Also, I heard only open the acetylene a little bit, and the oxy just a turn or so. What the heck?? This whole thing has me afraid now, and I'm usually a very coordinated, well researched person!

5:15-Blow up as in BOOM./ or Blow up as in Bubble.?! JK

should always open the oxygen for a short blast of air to clear out any dust from between the regular and the bottle, reason for this is if dust is inside it can compress extremely quickly when you open the oxygen causing the dust to heat up enough to catch fire, though it seams crazy it's called regulator burn out, and is and extremely common cause for torch use injury, and always pitch your lines of any residual air before attempting to light a torch

It's still leaking! LOL

Good video, though it is not good practice to crank open the oxygen all the way, for oxygen there is no need to do this and it is an important safety feature to only open it one turn so that in an emergency you can quickly shut it off. As you demonstrated, to light up its propane/oxy, shut down the reverse. Otherwise it will pop. Important to highlight this as people get it wrong. If you hear a pop what your hearing is an explosion in the torch known as a flashback. This means you are relying on your flashback arrestors to prevent a much much larger problem. Oxygen goes off first because it’s the more combustible gas and ignites with much less effort than propane or acetylene. Q. What size oxy tank is that?