Definitely done by a Tungsten Inert Gas Welder....
Posted: 1/28/2010 7:58:15 PM EDT
[#3]
Quoted: Looks like a mig.
Yep. That appears to be a mig spot weld. I just did a couple last week with tig. I drill a 3/32" hole and make a short pin out of a 3/32" 7018 welding rod that I leave 1/16" or so long and I just melt it in with a tig torch.
Posted: 1/28/2010 8:10:46 PM EDT
[#4]
So, would it be appropriate to use MIG to weld over this set screw?:
