@mrehorstdmd said in Bed Origin and axis Limit:
@fcwilt The OP is worried about losing 20mm of motion, but based on the last picture he posted, all he has to do is cut the X flag 20mm shorter. I'm not sure why you'd want or need to use long flags. Once an axis has been homed, its endstop is ignored, so it doesn't matter if the flag is still in the endstop or not. Why would you want to trigger the endstop 20-30 mm before the end of the axis?
I didn't want it to trigger there but that was where I could mount the endstop sensor.
And it does matter if the flag remains in the sensor on my printer.
If the flag was able to clear the sensor when near or at 0 then homing would not work correctly since the 1st move would be to move toward 0 but it would already be past the sensor and thus the sensor could never be triggered on the 1st move.
With the flag remaining in the sensor from the first trigger position (20-30) all the way to 0 the first move either moves toward the sensor OR does not occur since the sensor is already trigger.
In either case the 2nd and 3rd moves occur normally.