Hey,
Kip made some very good points. But he didn't mention how dangerous acetylene can be.
Acetylene is highly explosive at a very low pressure. If I remember correctly it's somewhere between 10 - 15 psi.
It is safe to use but you should know what your doing.
I used to use it to cut bolts off cast iron flanges. It's a lot easier than using a sawzall.

Danny

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