A simple Endstop Switch Mount:

• Height is switchblock height plus connector height, so those are nicely hidden.

Parameters

• Rod-diameter: I've added 8, 10 and 12 mm STLs
• Wall thickness: for a 8mm rod a 4mm wall thickness might look a bit bulky, for 12mm rod a 4mm wall look just right
• Clamp bolt length, I've set 13mm so the head and nut are sunken

Prusa

i3 MK3

No

No

0.4mm Nozzle, 0.2mm Layer Height

25% Triangle, and 1mm wall, top and bottom.

• Make sure the M3 bolts slide in to the holes, ream if necessary
• M3 nuts should slide in easily
• Slide the switches in (wires first) from the top and fasten with M3s