cupholder end knob

Simple end knobs for a badly-designed cupholder -- to stop cups from falling off. Tapered so they slide on easily. The hole itself is 9.5mm.

A previous version included text on the end. It didn't print well, so I removed it.

Composed using openscad. This version uses a dxf profile created in inkscape for the shape of the end itself. A previous version used minkowski on an annular disk & sphere (but took 5 hours to render :-/)