I have an on/off switch for my CNC en wanted a big emergency button to cut the power when needed. I designed this after I got some inspiration from other buttons.
It fits on the place of the original cap with water membrane and the ON switch can be reached thru the hole. The whole shield is active as a emergency button.
The switch is a very common one, I have bought this one: https://www.amazon.de/-/nl/gp/product/B08T1P4RZN/
Only the frame needs supports. Twist the nuts a bit to prevent them falling out.
Use Emergency-multicolor for MMU file.
The author remixed this model.