Originally Posted by
nickydubs
i have 2 taig mini-mills, one is CNC, the other is manual. both have 60 degree lead screws, and both have backlash problems. the CNC has a mildly adjustable split nut, the manual has a nut that i don't really consider adjustable. i have some serious backlash problems, to the tune of .011 on the y axis of the manual machine, the worst of them. the average is .007, out of the six axes.
my question is this: is it possible to get these machines to have NO backlash by converting to acme threads or ball screws? if so, does anyone sell a kit?
as a follow-up question, if the answer is "no", or "not without considerable cost", can you suggest an off the shelf benchtop CNC machine that has no backlash, as i'm in the market for a new machine anyway? i machine delrin primarily, on a small scale (the size of the taig is fine for me) and a bit of aluminum, maybe 10% of the work done on the mill.
thanks for your time,
nick