Summary

UPDATE: V2 2018-11-11

Reinforcement to prevent tearing.
The part is more resistant in case of accident.
thing name (Base 2020 Vertical Spool Holder - V2.stl)
Put a screw M3

I wanted a spool holder that was quick and easy to change the spool.
I recommend a 35% infill and a resolution of 0.200 or 0.300. Three perimeters for a good solidity.