Knobs for P3386 potentiometer

These are add-on knobs for P3386 potentiometers. They press-fit into the existing screwdriver slot.

I designed these because while you can buy them with knobs from the factory, they're harder to get and cost two or three times as much as the plain screwdriver-slot ones, which aren't cheap to start with.

There are tall and short versions of several styles. I prefer the short versions.

I hope these are useful to other electronics hobbyists.