Ger21 is right, but I'd go a step further. Skip the cheap acme and spend a few bucks on high pitch acme screws. Here is some info on why http://pminmo.com/PMinMOwiki/index.p...chanical_Power
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Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
Vist my websites - http://pminmo.com & http://millpcbs.com |