Bearing spool holder for Wanhao duplicator i3

- This is a work in progress, I will gladly answer any questions. Please notify me if you run into any problems so I can update the project. :)
- I would recommend a wall thickness of 2 mm and an infill of at least 10%
- Supports are only required on the “Spool-80mm”
- The spool holder supports up to 80mm wide spools atm, I plan on adding different sizes in the future.