Ender-2, ender-3, and CR-10 bearing filament guide
thingiverse
Quick fix I came up with after noticing filament was eating away at the extruder infeed! You'll need: A long M3 bolt, at least 16mm, and a nut. A V623ZZ v-grooved bearing, 3x12x4mm or similar (check out this link: https://nl.aliexpress.com/item/20Pcs-set-V623ZZ-V-Groove-Ball-Bearing-3x12x4mm-Carbon-Steel-V-Groove-Bearing-Used-In-Rail/32817763817.html?shortkey=eAbqYzU3&addresstype=600 - you can get these for under £3). Edit: 01/05/18 - added CR-10 file (haven't tested it yet, as my CR-10 is in the middle of a job).
With this file you will be able to print Ender-2, ender-3, and CR-10 bearing filament guide with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Ender-2, ender-3, and CR-10 bearing filament guide.