I figured I'd post a slightly alternate idea for making a tension wrench. I was looking around for a good material to craft myself a decent TOK wrench for this American Lock ASL40 that I picked up. the wrenches that I have are too skinny for American Locks and thus slip and jam the plug - no bueno!
Anyway... I looked around and found some old cotter pins... http://en.wikipedia.org/wiki/Split_pin
.. and Using just a pliers and a couple of different files I managed to make myself two tension wrenches from the same pin. I bent each side to make a TOK and normal wrench.
I'll post a picture or dos when we pull in. We're not allowed to plug personal electronics into the computers for OPSEC reasons...