Remix: Ultimate Spool Roller for Ender 3

thingiverse

This is a remix of https://www.thingiverse.com/thing:3341611 to make it work with the top rail on an Ender 3. You can reuse the same rail nuts and screws to mount this in the same spot as before. truglodite's design stands out, I've always liked dual rollers over single ones, and this one performs well. Keep in mind that printing really tall objects might affect your maximum Z height, reducing it by about 15-20mm roughly. I considered making an adapter for full Z height movement, but I usually don't print things that tall, so I skipped it - swapping out takes only around 5 minutes.