So I'm having a bit of trouble and not sure if it has been addressed, but pinning tongs isn't quite working out as well as I think it should. I've made a few pair, but after those 3, I just haven't been able to get it right.
The trouble I'm having is as I punch the hole, the boss caves into the pritchet and it may crack. I don't beat too thin but it still may be. Thickness suggestions? I read about using a nut underneath the boss as I punch.
Using 1/2 in rebar, heating to a orange/yellow, moving it down to just over 1/4 inch.