Knob
thingiverse
I lost the hat of a rotary switch from our floor fan. This is a replacement. It is easy to modify the STL file to suit any rotary switch/potmeter, etc.
Download Model from thingiverse
With this file you will be able to print Knob with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Knob.