[chubbysautocenter]

01ab683ea506fb6bd7dc3d81dc1cced8717e65b47b.jpg (59.19 KiB) Viewed 579 times

this is tig welded in ac on mild steel. the bead looks very bad. is this the best it gets?

[Otto Nobedder]

Nope. I've seen them almost indistiguishable from a weld.

Patience, practice, CLEAN X 3, and more patience.

I can't advise you on the "how", though. Brazing is one place I'm still an oxy-fuel/flux fan, but my stuff does not have to look good, only meet liquid oxygen service requirements under pressure. I frequently repair joints that were previously TIG-brazed, because they don't hold up to the thermal cycles.

Steve S

[chubbysautocenter]

Nope. I've seen them almost indistiguishable from a weld.

Patience, practice, CLEAN X 3, and more patience.

I can't advise you on the "how", though. Brazing is one place I'm still an oxy-fuel/flux fan, but my stuff does not have to look good, only meet liquid oxygen service requirements under pressure. I frequently repair joints that were previously TIG-brazed, because they don't hold up to the thermal cycles.

Steve S

I finally posted a pic. but I keep referring back to the lamp post video. I just don't see how my bead looks that bad. when I go back to dc and use silicon bronze it perfect. this ac deal and aluminum bronze thing just kills me.

[Oscar]

get a piece of scotch brite pad and wipe down the filler real good, then wipe it down with acetone. You'll be suprised how much crud comes off it.

[chubbysautocenter]

get a piece of scotch brite pad and wipe down the filler real good, then wipe it down with acetone. You'll be suprised how much crud comes of it.

scotch pad.. ok thanks