In reply to spitfirebill:
This can be done, but requires a lot of skill to do right. You can gas weld damn near everything(read an old Machinery's Handbook for more info), there was a time when that was all that was really available for detail work.
In reply to spitfirebill:
This can be done, but requires a lot of skill to do right. You can gas weld damn near everything(read an old Machinery's Handbook for more info), there was a time when that was all that was really available for detail work.
Kenny_McCormic wrote: In reply to spitfirebill: This can be done, but requires a lot of skill to do right. You can gas weld damn near everything(read an old Machinery's Handbook for more info), there was a time when that was all that was really available for detail work.
This would have been one of those guys. He took agriculture at Clemson back when they used to teach you how to use dynamite and ammonium nitrate to dig a ditch and remove stumps from the ground. He would braze rust through holes in my TR-3 fenders. He still ran his import cars shop when I met him. Mostly English stuff.
spitfirebill wrote: I swear an old friend on mine that built aircraft told me he gas welded aircraft tubing, which I assumed was CM.
This was the procedure before TIG was invented. I just came back from Oshkosh, WI and the EAA convertion and there are places that will show you how to weld with gas, TIG, and MIG. Also how to weld both 4130 and aluminum. Including gas welding aluminum.
There's a build thread somewhere where the builder went to a famous rally shop (starts with a G, rhymes with Gartrac) to pick up a set of alumin(i)um fender flares for his MkII Escort. They made them right then and there from three stampings each, gas welding them using a strip cut off of the parent material. You can't see the joints unless you look very close for the slight difference in hue.
I have a friend who gas welded the mild steel cage in his race car. All he had was torches, so that's what he used. Not sure if he used coat hanger as the filler, though 
He tested it many times, and it did the job.
Guy that got me started in TIG was a T&D welder for 25+ years, street rodder and was the local go to guy for gas welding air frames too. While he made it look easy his welds were pure artwork.
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