Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: mcporche on June 14, 2026, 10:29:30 AM
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I've got a CNC running Mach3.
When I home the x and y axis with the units set to MM, the gantry moves to the proximity sensor, then it moves away a small amount, and slowly moves in to around 2 mm away from the sensor.
When I home the x and y axis with the units set to INCH, the gantry moves to the proximity sensor, then it moves away much further, and VERY slowly moves to around 3/4 of an inch or more away from the sensor.
Is this normal? I would think that regardless of the unit setting, the gantry would home right where the sensor triggers.
(https://i.ibb.co/cKd2hh0w/CNC-Zero.jpg)