This is an improvement over the original spool holder.What I did not like from the original was:a)fixed permanently to the frameb) extruder/spool position does not always allow a correct unwinding of the filament.I decided to design this support to solve these issues. I took inspiration from other spool holders, but it is a new design done in freecad. The original screws are at an offset for a simplified assembly.Printed and tested. Never had any filament lock since.