When it comes down to it there is nothing better than manual tools for your Lock pick Set, whether they be retail, homebrew, macgyver style. DIY'ers look here.
They are used to put a turning force on a pin cylinder, tubular or wafer lock and to tension the bolt on a lever lock - in all cases with the purpose of binding one of the pins/wafers/levers so that you can feel for it with your pick.
The wrenches used for pin cylinders tend to be 'L' shaped - they may have a twist in the long part so that your finger rests on the flat rather than the edge when tensioning; the short part will be of different lengths and widths to suit different keyways; and some also put 'teeth' on the edge to improve grip. For tubular locks they are shaped differently because of how you need to apply tension. For wafer locks double-pronged wrenches can be useful. For lever locks they are 'L' shaped but made from a thin 'rod' rather than a flat piece of metal as for the other locks.
Shortlineflyer, good to see your still at it . How'd your picks turn out?
As to your question on tensors; I'm not quite sure what your looking for. I know you've picked several locks, so I assume you know how they work. If your not exactly sure as to why they work, reading the "MIT Lockpicking Guide" would be a good place to start. Or is it that your not sure how to go about making them?
I'd be happy to post some pictures if it would help. Let me know exactly what it is your looking for.
. How'd your picks turn out?