Originally Posted by
Pandinus
In the standard MACH3here is a FEEDHOLD and a STOP , the way I understand it....
Stop is like "right now" dead in the water, starting again after this "might" have unexpected results, while it allows you to rewind or change the run from here / next line...
FEEDHOLD "should" decelerate safely, no lost steps and in the middle of the current move and a start after this "should" accelerate finishing the current move, and would not allow you to change the program position.
While in either of these modes if you have stopped the spindle, START THE SPINDLE BEFORE YOU PRESS THE START MOVE...
I'm assuming Tormach would have left both buttons in...