i have a small mill with stepper motors, gecko drives running EMC1 (with quickstep). yesterday, i decided to try gcode for the FIRST time and try machining some wood. i used the rectpocket program from http://jelinux.pico-systems.com/gcode.html to generate gcode. when i first ran the generated code, i received a "following error" message. the first move in the gcode was F40 and i changed that to F20. after that, i did not see any additional error messages. the first pocket had a couple defects. when i looked through the gcode, i noticed moves as fast as F48 and i changed all of these to F12 and with the F12 as the max speed. after making the edits, the pockets came out perfectly. maybe i have some tuning problems or perhaps this is normal behavior for a modest machine. i don't know. here are some dumb questions: should a small system be able to reliably execute moves like f40 or so? what is a "following error" and is it fundamentally different than a missed step? djs