Customizable Printable Spool for Filaments

This is a customizable filament spool which can be easily printed, even with small printers. It is a remix of the great design [#7980 by MakeALot](https://www.thingiverse.com/thing:7980), see also the related [thing #102270 by ksaathoff](https://www.thingiverse.com/thing:102270) with variable width.
This design uses a very similar geometry but offers several cutomizable options and additional features.

###Customizer:
Note: this design does not work properly in Makerbot's Customizer on Thing