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General Mach Discussion / Z axis keeps losing caliberation

« on: April 07, 2010, 11:53:13 AM »

when i'm running a gcode my z axis seem to losing it.s calibration. it stepper don't change (in motor tuning) but when i tell it to move 3" to well move something like .40" and the z axis is moving alot fast to. now when it was cutting i did play with the feed rate. it has happen like three time now and everytime i have recalibrated the axis. i would like to trust it to put a good piece of wood in there but not there yet, but getting closer.

thank you