A wireless thermostat is too expensive to put in every room, and I had one of these extra radiator thermostats lying around, so I thought I'll put it to good use.

The problem (solved) is that the temperature receptor of a radiator thermostat is biased because it is too close to the heat source. So I've put this in the middle of the room and works perfectly.

Details

The F3D version is parametric, you can modify pretty much everything from “Change Parameters”.

The STL version fits my radiator fitting that has a diameter of 22mm, and snaps into the base.

Printing

Import the STL into the slicer and “Split to objects”