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 - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
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