Door Stopper End Cap/Tip

A parameterized end cap for an existing door stopper. I have a classic solid brass screw-in style door stopper on a few doors in my older home which were missing the end caps. I didn't find any design with the right sizing to fit mine, and since these vary so much in size and shape, I figured this was a good opportunity to make an openscad design. The following are some suggested printing parameters:

### Print Settings:
- **Filament:** TPU or other flexible filament - I used AnyCubic TPU, but I'd imagine any TPU, FlexPLA or similar soft/flexible filament would be an equally good choice.
- **Infill:** 100% - most of these end caps will be so small, I'd suggest just filling at 100% infill for structural integrity, though you'd probably be able to fill at 50% or less and be fine depending on the application if you wanted more give
- **Layer Height:** 0.08mm Extra Fine - I used the smallest standard layer height in OrcaSlicer, since the print still only takes about 20-30 minutes on my FDM