Wire brush. JB Weld.

Keep in mind, I've not repaired an air tank yet, and I may well be
mistaken. You could also pilot hole, and then put in a self drilling
screw with some kind of washer (nylon? Rubber?).

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"RBnDFW" wrote in message
...
OK, so I got a deal - Like new 60-gallon Kobalt compressor for $125 on
CL.
He said it had a hole in the tank, but he couldn't find it.

So I got it home powered it up, and sure enough, there's a hole in the
bottom It's about 1/16", in the weld area adjacent to the large drain
bung at the very bottom.
Now, this thing looks brand new. I really don't think it's rust
perforation. the paint wasn't bubbled, and there is no rust at the
edges
of the hole. i think it was just a porous weld. Anyway, I'd like to
fix it.

Here's what I'm thinking: Drill out to whatever diameter gives good
thickness.
Tap it, and screw in a bolt.
Then either braze or silver solder

Better suggestions welcome.