Hey Gazz,
I have welded many hammers. I have always TIG welded them with great success. Most times the hammeer tip is missing so I make a new tip from CRS and TIG weld it to the hammer using 70S3 filler wire. Usually I start by only partially shaping the missing part and weld it on. Leaving it a bit oversized and finishing it to the final shape after welding. Much easier than trying to align the part perfectly and then you have to file the weld anyway. Even when I get the broken part it is usually to mangled or to small to weld back on so I end up making new pieces anyway. I think once I saved a tip that was in good shape and had nice checkering on the tip. It worked but it was a tough job. I can't imagine that silver solder is any easier. It may work but it is not as strong as a full penetration weld. I have pictures on another computer of a set I did recently. If I think of it tomorrow I'll post them. Good luck.
Bill G.
