I have 5 oxygen and acetylene bottles (different sizes) and numerous torches, gauges and tips. Naturally the bottles are empty and need a hydro before they can be refilled. My late father used to be able to gas weld aluminum. As for me, it seems like too much of a hassle to get the bottles hydro'd and refillled just to melt holes in the aluminum. At the shipyard I spent most of my life at, the aluminum welding was done by TIG and quite easy to lay a nice bead.
These new type of aluminum rods are supposed to be able to weld with a propane torch and supposedly repair things made out of pot metal.
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