Snapmaker U1 Samla spare spool holder

If you removed the Snapmaker U1 spool holders and want to keep them neatly stored on the edge of the Samla 45L tophat. Works with any Samla Tophat mod that leaves the lip opening exposed. This is design is intended for storing spool holders that are not in use, not to let you feed filament from. Friction fits along all straight edges of the Samla 45L, but can be glued if you want them to be more secure. The spool holders should slide easily into the groove at the top. Should be able to hold any printed or aftermarket spool holders that use the same attachment clip. Can be printed without supports but may string if you go fast or do not have sufficient overhang cooling. A few grams of support material will ensure a sharper print.