Knob for 2.5mm D-Shaft Funky Switch
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A replacement knob for the Alpine 7-way "Funky Switch" rotary encoder
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- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution
A replacement knob for the Alpine 7-way “Funky Switch” used on many sim racing wheels. It'll fit that switch, or any other rotary encoder with a 2.5mm D-shaft. I'm using it on a Cube Controls F-Core wheel, and it was designed to match the original knob from that wheel.
You'll want to print this with a 0.25mm nozzle and 0.1mm layer height. Larger nozzles can't print the hole for the D-shaft accurately enough, and it ends up undersized and won't fit on the switch shaft.
I designed it to print with the D-shaped hole down, but it's such a small surface area you'll need some sort of bed adhesion promoter. A bit of hairspray on an old PEI sheet worked for me, but you might be able to get away with a brim