I welded a right side broken hammer on a top quality Belgian SLE. I’ve fired it hundreds of times since with no issue.

The broken hammer was soft enough a file did not skate across it so I decided it had not been hardened to glass-status. I welded, reshaped the weld area, polished and installed. The weld worked very approximately with a file the same as the body of the hammer did before welding so I decided to forego any heat treatment and see if it held. Since it’s my gun I don’t mind fixing it again in the name of “Let’s find out” if I can weld this hammer and not make a new one.