I've seen some pretty craft hammers on the job. Especially structural iron workers. Recently I saw an est wing with a thread hole and shot pins threaded into it. The guy really liked the hardness of the pun and it could be replaced if necessary. Not really sure how he threaded the shot pin.

I had a woken handle tomahawk chipping hammer that lasted for a long time, and then it was destroyed by a helper using it as a sledgehammer; makes me mad just remembering that day. I got another on his expense, day one of having the new one I thought I should take precautions and reinforce it. Long story short, it lasted a long time but n the end, it broke due to being used a lot and probably won't get another one. I now am the very proud owner of a east wing, I call it the Michael Jordan of chipping hammers.