Spool for Formfutura ReFill Filament

This Spool consists of two pieces, that have to be stuck onto Formfutura ReFill filament. The Design relies on the cardboard core of the Filament to stay intact.
The Assembled Spool is small enough, to fit inside the bag the filament came in.
(the added pictures do not depict an older revision of the model)
 

USER MANUAL:

1. Print the Model twice
2.  Lay the Filament onto the Part with the four little sticky-uppy-bits touching the inside walls of the cardboard spool core.
   Align the velcro straps with the cutouts meant for them.
3. Open the velcro straps gently, and pull them out.
4. Insert the second half and turn it into position, so that the Spool can not fall apart.
5. Start printing!