in a pickle any machinists?

71Scamper said

So your saying he's the only one that knows what he's doing? I've been at this for 20 years now buddy. If you read the initial post from the OP he states the bolt is too far down the hole to weld a nut to. Its also cast heads so trying to build up weld inside the hole will just fuse the nut to head and make a worse situation.

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Of course not. What I am saying is doing it that way with someone who knows how to tig weld will result in 100% success. I'm glad for you buddy. I've been doing it since 1974. I've seen people take a tig welder and build up on a bolt over an inch deep and get it out. No damage to any surrounding area. I couldn't tig weld my way out of a pile of poop, but I'm sure you can do it all.