Maybe you were thinking "Oxy-Propane"? It's good for cutting but it requires a different cutting head for the torch if you want it to work right. Welding with Propane, even if you use oxygen with it, is almost impossible- - - -no way to get the flame pointy enough to run a bead with it!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!