I have two that I just can't bring myself to chuck out. I want to use them as practise, but I haven't been able to undo that damned crank pin.
I have attempted to make a socket to fit, but it keeps slipping off. My next strategy is to use a rattle gun with this socket and apply downward pressure at the same time. I just need a 1/2" to 3/8" reducer.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!