Quote Originally Posted by Tenson View Post
How do you mill circular pockets? Say you want a 30mm pocket and you set a feedrate of 2000mm/min then it will be rather slow at the outside edge but at the center the direction changes will be super fast and the motors can't keep up.
The question is why can't the motors keep up.? 2000mm/min isn't fast and to be honest it's often acceleration that is the cause of most lost steps.
The way I do circular pockets is to enter with spiral entry to full depth then interpolate outwards with small stepover. There are no Centre direction changes, at the finish the tool retracts straight up or arcs out if programmed to do so.