I just looked up what type variables hold the number of steps to move in marlin firmware in the file stepper.h. unless i'm terribly mistaken, it would take a very big printer to overflow the size on a long datatype back of the envelope calc for size: using only the positive values of long(2,147,483,647) steps per MM for typical printed gear ~80 x2 because of .9 degree stepper instead of 1.8 degreby Olestra - Mechanics