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Opper77 · 04-07-2005, 02:01 PM

5lb acetylene is plenty..... you can cut 12" of steel with 8lb acetylene, 70 lb oxygen and the proper size of tip. I would find a chart from the manufacturer and set it according to TIP SIZE, which is the determining factor in gas pressures. Anything more than that is a waste. Also, a couple people above have stated that they use 10 lb acetylene.....be advised that 15 lb is the MAXIMUM SAFE WORKING pressure for acetylene (as a professional welder, I have NEVER had to use more than 9 lb for anything...EVER...and I have cut steel upwards of 12" thick) and at 21 lb acetylene is unstable and can spontaneously explode.

A torch is not something to be taken lightly. Figure out your tip size and set accordingly, or it WILL bite you in the ass eventually.

04-07-2005, 02:01 PM	#14
Opper77 Ob-Gyn Kenobi Join Date: Aug 2003 Location: Edmonton, Alberta Posts: 489	5lb acetylene is plenty..... you can cut 12" of steel with 8lb acetylene, 70 lb oxygen and the proper size of tip. I would find a chart from the manufacturer and set it according to TIP SIZE, which is the determining factor in gas pressures. Anything more than that is a waste. Also, a couple people above have stated that they use 10 lb acetylene.....be advised that 15 lb is the MAXIMUM SAFE WORKING pressure for acetylene (as a professional welder, I have NEVER had to use more than 9 lb for anything...EVER...and I have cut steel upwards of 12" thick) and at 21 lb acetylene is unstable and can spontaneously explode. A torch is not something to be taken lightly. Figure out your tip size and set accordingly, or it WILL bite you in the ass eventually. __________________ '85 GMC Shortbox... I used to have a firm handle on life....then it broke off.