A simple bracket to hold a threaded proximity sensor. The outer mounting holes are the same as a 40mm fan.

The stl is for a 20mm diameter sensor.

Some of the variables in the scad file can be changed if your sensor has a different diameter & nut size.

Homemade

No

No

0.2mm layers

20%

Make sure the hotend is hot enough to get good layer bonding.
You may need to drill out the 3mm screw holes.