Parametric pen grip ball, inspired by Makers Making Change's pen ball and designed for them.
- Prints in ABS or PLA with minimal supports.
- Parametric: size and pen diameter can be changed
- Uses 5× M4×12 machine screws and 5× M4 nuts
Use at least two shells for strength.
The design works best with some very light support material over the print bed only. It can be difficult to remove support from inside the inner nut catches, so use the lightest support you can get away with. You can print this without support, but the surface finish might not end up the best without support.