Spiral soap holder - customizable

I needed a soap holder and wanted to practice some SCAD programming ;)
It should be:

- easy to print,
- should not need support to be printed
- should drain the soap (low soap contact area) and drain areas at the bottom.
- should be customizable

therefore I made this open SCAD file.
For those who like to have a bottom you can spedify a bottomHeight > 0 - there will be a bottom and the drain and connections will not be generated.

The sample has been made without bottom.

- bottomT