I recently made a guillotine style (hinged) fuller which used a socket head shoulder bolt as the hinge pin. It broke on me today, right where the shoulder ends and the thread starts. I'm going to try one more time, but this time try annealing the bolt so it is tougher and less brittle. Can anyone suggest a method of annealing? It's just a little part, so any method would work. (Spoonful of molten lead?)
Grant Erwin