The problem is, for the project I have in mind, the short cranks are too short and the long are a bit too long. I may end up using a custom hub to get the length I want out of a short crank or maybe if I use just the right spinner I can conceal a long crank and keep it looking scale. I have to review my plans closer when I get the time. I was really just curious if the threading could be done by hand before I start cutting cranks and experimenting. I'll definitely keep your offer in mind though. Thank you...