Auto-Squaring with LinuxCNC v 2.8

[michaelrommel]

Hi folks,
I am building such a gantry with two Y-axis motors/joints. I want to use these typical chinese proximity sensors as limit switches and homing switch.

In order to have the gantry square every time, the two sensors on the Y-Axes need to be precisely repeatable. So I wondered if any of you have experience whether it is better to approach the limit axially or radially (the cutout in the metal in the lower image shall act as an "open" of a NC sensor - with the axial approach this is not possible, of course.)

Where to those sensors detect more reliable?



Thanks for your insights!

Michael.