Simple Ender 3 Spool Adapter

thingiverse

I made this simple spool adapter for my Ender 3 because filament rolls kept jumping around on the default rubber holder. Most adapters on Thingiverse include fancy extras like bearings or are screw-together parts, but I wanted something straightforward. This design doesn't require much filament to print since I kept the walls as thin as possible. I printed it with PLA, and surprisingly, the roll still rotates freely without snagging. There's also a small "stopper" on one side that faces away from the default holder so the spool can't escape. I used 1.2mm walls, top, and bottom at 30% infill at a resolution of 0.3mm for this print. No support was needed.