Generic Upper Filament Guide - 608 Bearing
thingiverse
Remix of Drykill_23's filament guide. I slimmed it down to use less filament and print quicker. I also converted it to press into the end of a 2020 extrusion, so it would work on *any* printer that uses a 2020 upper cross beam, regardless of the Z screw mounting situation. Installation requires no tools and no disassembly - though some printers have a press-in plastic end cap that you will need to remove. Takes a standard 608 skateboard bearing, or you can print one. I've had good luck with this model: https://www.thingiverse.com/thing:2746804 You will also need a 25mm (or longer) M3 bold, nut, and a couple washers.
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