A hammer might be better. I once knew a fellow in Mammoth, AZ who killed his wife with a pair of pliars. It took him several hours, but maybe that was the point. I never thought he was capable of such a crime but never liked him through the three years I worked with him. He was very suspicious about his wife and said once that he thought all women wanted many “lovers”.
Yes, a tedious castration by pliers is what I meant. Slow and deliberate. Sew him up and give him a blood transfusion and then do it all again.