Jim,
Cool man! I am an engineer and sometimes its hard to explain things with out having the literature right in front of me. If your in the market, I can recommend "Nook" lead screws. You can find them at thier web site or at MSC (which have distribution all over the usa). They make a precision lead screw that is very affordable. I bought a 36" x 1/2-10 section of thier "Precision" lead for $22.37, a precision nut - $20.05 and the flange was $30.20. So the entire thing cost me less than 75.00 and the screw is rated at +/-.003 per foot. Almost as good as any ball screw for a fraction of the cost. I am alway looking for stuff/deals like this. Like I said for 75 bucks I got the precision screw, nut and mount and you just cant beat the price.
Good luck man, Glad to help.
Glen |