Ender 3 spool holder plug

thingiverse

This is a straightforward butt to slot into the original spool holder.\r\nJust expand the end diameter to 48mm (up from the standard 36mm) and it will prevent spool drops.\r\n\r\nPrint without supports, with at least three walls due to its conical shape, and a 40% infill level.\r\n\r\nInsert it firmly by hand, no glue or adhesives required.\r\nIf that doesn't work out, a small amount of glue will do the trick.\r\n\r\nWould love to see your finished project if you can manage it.\r\nThanks in advance and happy printing.