Etchable Mechanical Endstop (with support parts)

thingiverse

Introducing an improved Mechanical Endstop for MakerBot's Cupcake CNC, I've made a video demonstrating its installation process. The latest version 1.0 of this endstop is designed for Gen4 electronics and has been cleaned up to make home-etched boards easier to produce. To use it, etch or buy 3 to 6 of the provided boards (suitable for all three axes), then solder components in place except microswitches, ensuring correct orientation. Next, print the Z-shelf and Z-slider parts, attaching the board onto the shelf with a switch pointing upwards and pins through the board into the dip in the shelf. Screw the long 3mm screws into the slider sides and place nuts on the ends, securing them while holding the screws from turning. Attach the assembly to the right-inside endstop position of your Cupcake using 3mm screws. Make sure the z-stage can click the switch without lifting it. Connect the board to a stepper driver with a CD-ROM cable (splice Ethernet cables for older drivers), ensuring the LED lights up when powered. In RepG's inboard preferences, change the endstop setting to 'Non-Inverted...', save, and restart. Add G161 Z (Home down on Z) to your start code for precise z-zero calibration. I'm currently working on X and Y stage support and will provide similar installation instructions as they become available.