3018 CNC end-stops

This project file and tutorial are designed for the SainSmart 3018 Pro. This tutorial guides you through the process of adding X, Y, and Z-axis end stops/limit switches. This allows you to protect your machine from violent crashes, damage, and other unfortunate incidents. It also allows you to “home” the machine so you can get repeatable and consistent machine coordinates.

**Materials Required**

- 1 sheet of 6 mm (5.5 mm) cast acrylic which is at least 90 x 110 mm ([Amazon](https://amzn.to/3jVsjgN))

- 1 sheet of 12 mm (11 mm) cast acrylic which is at least 90 x 70 mm [Amazon](https://amzn.to/3jVsjgN)

- 2 x Roller Limit Switches (V-156-1C25) ([Amazon](https://amzn.to/33PAJ3E))

- 2 x Long Actuator Limit Switches (V-153-1C25) ([Amazon](https://amzn.to/2SS1KNu))

- 2 x Snap Action Limit Switches (V-15-1C25) (can be made by removing the actuator of either of the two above or purchased at [Amazon](https://amzn.to/3iTi3nV))

**Hardware Required**

- ~20 x M3 Cap Head Bol