Quote Originally Posted by Jonathan View Post
I'd love to try it with some 20mm pitch screws and big motors / servos and see just how fast you can get with rotating nuts.
Jonathan Don't understand the facination with speed.? . . . It's only any good upto a point then it's a waste. It's like very high rapid speeds there only of any use on certain types of jobs but in the main there useless and come at too costly a price.! . . . . Impressive, great for bragging right's but mostly pointless.

To be of any real use and cutt at high feed rates you need fast high horse power spindles, expensize tooling and a very ridged machines which can handle the force's involved

The cutter and material specs mostly dictate feeds anyway so IMO most high pitch screws are more than enough when it comes to DIY cnc and even small production use.