I have a few questions about steppers
1. What controls the speed of the stepper
2. How fast can you get steppers to go on rapids.
3. Why does everyone use pulleys on the axis motors, why not direct couple the motors to the screw.
Has anyone seen the video of the mini Fadal on you tube, I've watched the video a bunch of times and I try to figure out how he gets the spindle speeds and rapids. Here is the link.
http://www.youtube.com/watch?v=ISzkthutKnA&feature=youtube_gdata_player]Scratch Built mini version of Fadal's VMC 15 - YouTube