MasterSpool Remix

This design is inspired by the awesome MasterSpool concept by RickRap https://www.thingiverse.com/thing:2769823. It uses roughly 20 percent less material and prints 15 % faster than RichRaps MasterSpool V4 while maintaining more stability than is needed.
I also increased the number of storage options for the filament end.
It can be used with 1.75 mm, 2.84 mm and 3 mm filaments. I designed it for optimal print quality with 0.4 mm and 0.6 mm nozzles and layer heights of 0.2 mm and 0.3 mm.

Let me know if you have ideas on how to improve the design.

17.03.2018: V2.0 uploaded. This version is lighter and it should be easier to handle when putting in a filament spool.

Print setting recommendations:
Nozzle Diameter / Extrusion Width
0.4 mm or 0.6 mm

Outline / Perimeter Shells
0.4 mm Nozzle -> 3 Shells or 1.2 mm
0.6 mm Nozzle -> 2 Shells or 1.2 mm

Layer Height
0.2 mm, 0.3 mm

Infill
10 % Rectilinear or 20 % Grid

Support
no support material needed