IBM PC style power switch mount

I bought a box of these chunky switches a while back and have finally found a use for them as the main power switch for my rebuilt Ender-3. Produces a very satisfying sound when flipped.

It comes in two parts - the housing, and the lid. The switch is sandwiched between the housing and lid with two screws that thread into the plastic of the housing, and there is a countersink in the lid to accept the appropriate screw. In my case, I used two small wood screws I had lying around with a thread diameter of ~3.5mm, but this should be flexible. The housing fixes further to the extrusion with a pair of T-nuts, and two M5 screws go into the two holes on the front of the lid.

The housing should print on its face without supports, while the lid prints lying flat and has two cavities to accomodate the mounting tabs of the switch, which require either a small amount of support, or a bridge of some kind over the hole that can be drilled out later. The support option would probably be easier.

Since my initial build I increased the depth of those cavities slightly as the original version required some manual work to clear a space for the mounting tabs. This means the switch isn't cinched between the prints directly now though, so you will need to add 1 or more washer or some other spacer to each side to ensure a snug grip. Nylon washers would probably be a good fit but I don't have any around.

Where to get the switches? I unfortunately can't be much help here. They turn up on ebay from time to time - I found an inexpensive pack of 10 that appear to be new old stock.

Built in SolveSpace, which maybe I should apologize for 🤷

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Update: I didn't catch just what a mess the geometry put out by SolveSpace actually was. I have updated the STLs with a bit of cleanup, and rounded off two corners in blender cause I could. I wanted to add a .blend file with the cleaned up meshes for reference, but the site won't let me…