Modular filament spool with selectable diameter

thingiverse

This is a smaller width filament spool, and with selectable diameter depending on where the brackets fit.I created it to store filaments I make from PET bottles, and I wanted a smaller spool with a larger inside diameter.It was designed to require a very small amount of filament.Bracket housing holes can be used to clamp the filament.I have included the source in FreeCAD in case you want to make your own version.