Emergency stop button for machinery

An emergcy stop button typically used on machinery - big and shiny.

Contains two switches for reason of redundancy.

The emergency button is designed for panel-mounting and fits into a round panel hole with 24-25 mm diameter and panel wall thickness up to 3 mm.

The desing comprises several parts to work correctly, six of them are printed (see for Thing files).

Consider printing the cap in a bright, shiny colour, e.g. red or orange - ensure to print at least the part dubbed "spring_fixed" from PETG. This part is a kind of end-stopp providing some bit of "protection" to the tactile switches.

You will also need the following off-the-shelf-components:

2 pcs micro tactile switch with a 6x6x3.6 mm casing size and a piston length of 7 mm
2 pcs self-tapping screws 2.9 x 16 mm - e.g. type DIN 7981
2 pcs steel-springs 5x12 mm

In case your springs have different dimension, consider to adjust the two holes in the print part dubbed "piston".

Likewise, in case the tactile switch piston is of