For 1/2 inch about 35 psi oxygen should be good. A little higher won't hurt. Propane isn't as dangerous as acetylene, so the pressure can be higher without risk of an explosion. 15 Psi should be OK. As long as you can get the size of flame you want, the pressure is high enough. Use a propane 2 piece tip recommended for 1/2 inch thick material. With propane, the oxygen is turned a little higher than acetylene when setting the flame to get the hottest flame. The oxygen valve on the torch body should be opened all the way and the flame adjusted with the valve on the cutting attachment. It shouldn't take too long to preheat. Experiment a bit and you'll figure out what works best. Dave
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Today's Featured Article - Women and Tractors, A Woman's Touch - by Teri Burkholder. I thought I would give you a little background on how I got myself hooked on tractors and their restoration. My family is a very "crafty" bunch of people. By crafty I mean good with crafts!! My Dad is a retired industrial engineer from Bucyrus Erie which made big shovels for excavating and he is also a wonderful wood worker. My mom and my "guardian angel" has had her own ceramic shop for 30 years and is an excellent painter. With these skills always active in our house it was hard not t
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