Not much to go on with that, but it could be made from high carbon steel or
beryllium copper. I can't help but think that guys that can do the math
would want to know more so they could steer you the right direction.
I have given thought to cutting it from something, the clock mainsprings are
a little thin for what I need. The spring from an old steel trap would be
perfect, but I understand they no longer make those.
OH OH!! I missed that 80 thou thickness bit.
Makes it a bit more difficult. Sounds like a spring for a sliding
padio door trolley or something - I know I've seen just what you are
describing in some door or window hardware a year or so back (when I
spent some time helping out a customer in their window and door
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