Kossel Spool Spacer

The spool holder on the Anycubic Kossel Delta is held to the 2020 extrusion with button head screws. The side of the spool rubs against the screws and with most spools this is not an issue. I was experiencing an extrusion problem and found that it happened only with the spool from Hictop. The spool sides have ribs that catch on the screw heads until the filament tension pulls them passed. I designed this spacer that solved the problem. I'm sure there is other filament manufacturers that use similar spools, so I'm finally getting around to publishing the spacer.