3D Solutech Masterspool - post release design

This is an updated design for 3D Solutech Masterspool filament.

3D Solutech is a US based filament manufacturer that is starting to provide Masterspool filaments.

This design is specific to 3D Solutech Masterspool filament with a cardboard core that has the following dimensions:

Masterspool Filament Core DIA: 75mm
Masterspool Filament Thickness: 67mm
Masterspool MAX OD: 195mm (should print no issues on a 200x200 print bed)

I've taken design ideas from @RichRap3D Masterspool v4, which allows the user to zip-tie loaded filament to remove partially used rolls. This will allow you to print ONE Masterspool to use over multiple filaments.

Filament Loading -
1) Place Masterspool filament over Masterspool hub, aligning zip ties into slots in hub.
2) Mate Masterspool end onto Masterspool hub and screw together until zip ties cause Masterspool end to bind or stop.
3) Cut zip-ties off Masterspool filament.
4) Tighten Masterspool end to hub the remainder of the way. Do n