Thingiverse
Z-Probe for CNC
von mbef
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This is a simple Z-Probe for a CNC machine - it lets the machine determine the length of the cutting bit on its own, and essentially self-calibrate the Z-axis, as shown here:
https://youtu.be/jmJzWebxJWQ
https://youtu.be/w4wR68q8Gww
It's designed for a [RS-CNC](https://www.thingiverse.com/thing:3010914), running Repetier Firmware, but should be adaptable to any. It works by mounting a microswitch underneath the bed, under a hole cut through, with a plastic pusher going through the hole. Your bit taps the pusher which pushes the microswitch, which is wired to your Z-probe pin (Z-min on Repetier).
The OpenSCAD source is attached - note that it uses [MoreWrong's ScrewsMetric library](https://github.com/More-Wrong/ScrewsMetric), which you can copy down from GitHub.
You will need:
* A microswitch - we used same ones we'd used for the end-stops, with 10mm mounting hole separation, and standard M2 or M2.5 holes. It's going to do an important job, so make sure it's nice and
https://youtu.be/jmJzWebxJWQ
https://youtu.be/w4wR68q8Gww
It's designed for a [RS-CNC](https://www.thingiverse.com/thing:3010914), running Repetier Firmware, but should be adaptable to any. It works by mounting a microswitch underneath the bed, under a hole cut through, with a plastic pusher going through the hole. Your bit taps the pusher which pushes the microswitch, which is wired to your Z-probe pin (Z-min on Repetier).
The OpenSCAD source is attached - note that it uses [MoreWrong's ScrewsMetric library](https://github.com/More-Wrong/ScrewsMetric), which you can copy down from GitHub.
You will need:
* A microswitch - we used same ones we'd used for the end-stops, with 10mm mounting hole separation, and standard M2 or M2.5 holes. It's going to do an important job, so make sure it's nice and
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