 Punches
I make my hammer eye punches out of A2, an air hardening steel. Heat it and forge it, set it aside to cool. Grind or sand to finish, let it air cool. Works great. Ask around machine shops, tool and die places, for drops or cutoffs. Preferably round rod or square bar 6- 8" long (more is better but then you'll be buying it), no more than 1" diameter. Any of the other tool steels would work as well, but I found A2 the easiest.
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