Potentiometer Knob Extender

Potentiometer Knob Extension. can also be used for converting a star shaft pot to a D shaft pot.

Has 2 versions: Slit and No Slit.
The "Slit" version has a small slit in the main body. You can insert a small piece of plastic or metal sheet to lock the potentiometer and knob together. In my experience, a cut up piece of raft worked well. The "No Slit" version does not have this slit, and is a normal friction fit.

Since the tip of the knob is small, and is prone to overheating and melting, I recommend you cool the part well, and set a minimum layer time in order to stop the tip from melting into a sad blob of molten plastic.