I know it's a pretty generic title but here's the problem.The print starts then almost immediately the printer adds .19mm to the Z height. this causes obvious problems. I have two almost identical printers . One does this, the does not. I figure that elinminates something odd in the G code at I think so I admit to not have read it yet. G code was generated with Cura and slic3r and there is no difference to the problem between the two with identical STLs. I tried re-flashing the firmware to the printer (Marlin). Then tried up-grading the firmware.It all worked OK but the problem remains. I seem to be able to send a G92 Z0 command after the print starts and the z axis shows 0 again. This is according to the LCD monitor on the printer. The layer height is set at .2 so a .19 increment is especaily odd. anyone have any ideas?
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