Light Switch Dimmer Knob

A really old plastic dimmer switch knob in our bathroom broke. This thing was seriously like 20 or 30 years old. It owed us nothing.

I found several designs here on Thingiverse, but none of them matched the dimensions or shape of our light switch shaft so I designed a new one.

The internal diameter of this one is about 6mm and it has a 1.5mm thick slot going down the center. Admittedly, I should have gone maybe 1.4mm or 1.3mm as it was a little tight to get on, but it did go and has been solid for a few years now.