Auto bed leveling Prusa i3 rework without Metal Bed

This is an auto bed leveling on my Prusa i3 rework, using Inductive Proximity sensor Autonics PRDL18-14DN that have distance of sensing 14mm, so you no need to changing the bed, because this sensor long range sensing and good sensitivity.

then just put the sensor above the glass and below the glass is your heat bed that have (contains) trace of copper (PCB) is enough for activation the sensor, like at the video.

I have already printing many times using it without problems...

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