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Old 10-25-2023, 05:25 PM
Scratch Scratch is offline
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Default Oxy/propane torches

I have a set of oxy/acetylene torches and tanks. I've been out of acetylene for a while now and because I don't get out much, my brother (who does) took my tank and keeps stopping at random Home Depots to switch it out with another tank. Very nice of him, but it's a little bit of an odd size so he's hasn't found one yet. I have a plasma cutter and welders so I have no need to cut or weld with my O/A torches but every once in a while I would like to use them to bend some steel or get a bolt red hot or something.

I don't need them much and haven't needed them for a while so I'm not in a hurry to get a full tank back, but yesterday, I did have a pipe I needed to bend and I was really wishing I had a full tank of acetylene.

I was talking to an old friend and he said "Just use propane. Your acetylene regulator will thread right into your BBQ grill tank." I'm like "yeah right."
But he was insistent on it so I tried it and sure enough, it did!

It looks like a lot of people like using LP instead of acetylene because it's cheaper and easier to fill. I'm liking that idea too!

I used propane in my same torch to heat up my pipe and while it took a bit longer than acetylene, it got it plenty red hot enough to make my bend!

It sounds like it works even better with a propane tip so I'll be ordering a replacement tip for my torch. If anyone has one they suggest, I'd love to hear it, otherwise I'll do some googling.

I had no idea that my BBQ grill tank would thread right into my acetylene regulator, and I could use that instead of acetylene. Maybe someone else here didn't know that as well.
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Old 10-25-2023, 06:18 PM
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Whitetrash Whitetrash is offline
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Gerry is a fan and uses it I use it no real complaints about the only thing you can't do versus acetylene is gas weld.
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Old 10-25-2023, 06:24 PM
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Kurtis from CEE on YouTube uses oxy- propane for cutting and heating too..

My Dad had both propane and acetylene torches. The propane was cheaper to run and easier to get refilled. The propane was only a tad slower to preheat prior to cutting, but barely noticeably.

Raising a burr with a chisel speeds up the initiation of a cut with either system. The thin metal of the burr gets hot enough to start cutting far faster than the edge of the work. Only worth the extra step on thicker material IMHO.

YMMV
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Old 10-25-2023, 07:06 PM
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The hose is different for propane. I believe it is a T ( model number) hose.

Don't know why, I have just seen use Grade T hose for propane. However, I have seen a piece of garden hose used in a natural gas water heater connection.

Scott
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Old 10-25-2023, 07:53 PM
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Quote:
Originally Posted by Whitetrash View Post
Gerry is a fan and uses it I use it no real complaints about the only thing you can't do versus acetylene is gas weld.
I suspect you could weld with it, but my only complaint with pane is that the gas welding tips are almost impossible to keep lit. Yesterday I had a dent in a hood that was inaccessible from the back so I wanted to take the dent out with heat. I used a Benzo torch and was able to pull the dent out about a 1/4" but then I needed a real small flame to upset the metal in specific areas and it would have been great to have a small hot flame to heat a 1/2 circle red and quench.

I've been tempted to try drilling a recess in the tip to see if that would stabilize the flame.
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Old 10-25-2023, 07:56 PM
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Quote:
Originally Posted by Scratch View Post
It sounds like it works even better with a propane tip so I'll be ordering a replacement tip for my torch. If anyone has one they suggest, I'd love to hear it, otherwise I'll do some googling.
A propane tip will really make a difference. When lighting and adjusting your torch, put the flame against some work or metal and you can add fuel or oxy easily without blowing out the flame.
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Old 10-25-2023, 08:32 PM
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Propylene is a good option.
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Old 10-26-2023, 08:53 AM
JBFab JBFab is offline
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I use propane as well. I personally have no reason to go back to acetylene. However, I must caution you - If you do use acetylene again MAKE SURE YOU SWITCH BACK TO AN ACETYLENE TIP. You can use propane in an acetylene tip (albeit poorly) but you cannot use acetylene in a propane tip. DAMHIK.

I have been told you need to use the proper hose for propane, but In 20 years I can't say I have had an issue.
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Old 10-26-2023, 10:42 AM
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Originally Posted by JBFab View Post
I use propane as well. I personally have no reason to go back to acetylene. However, I must caution you - If you do use acetylene again MAKE SURE YOU SWITCH BACK TO AN ACETYLENE TIP. You can use propane in an acetylene tip (albeit poorly) but you cannot use acetylene in a propane tip. DAMHIK.

I have been told you need to use the proper hose for propane, but In 20 years I can't say I have had an issue.
I agree, not going back. And I always use normal Oxy/acet twin hose from the welding supply
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  #10  
Old 10-26-2023, 05:15 PM
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I had both before leaving Onterrible, but I also had access to large oxygen tanks to run with the propane.

Out here I only have a small pair of tanks, and use acetylene, partially because I’m still using the same tanks and gas I moved out here. I think I have one or two more b tanks that are still full, at current rate that will last me several years.

However, I use them as a last option now. Zip cuts, grinders, and abrasive wheels in my gas concrete saw get used first. Again it’s partially because I have a supply and am still using that up.


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