I'd need a big spring to lift 10 lbs and apply upward pressure. I've got a 250oz-in stepper, and I'll be using 1/2-10 acme rod. I'm goint to try a 7lb constant force spring to carry most of the weight, and I'll probably go with the delrin nut. Thanks.
Gerry
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Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
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