Simple 3axis zero block for cnc.
Connected to breakout board as probe. GND connected to cutter and signal wire to block.
Just place cutter middle of block and run gcode in MACH:
G92 X0 Y0 Z0
G31 X-25 F100
G31 Y-25 F100
G0 X-3 Y-3
G92 X0 Y0
G31 Z-15 F100
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