Filament guide (upper) for Ender 3 Pro.

thingiverse

First things first, this filament guide works great in combination with this one: https://www.thingiverse.com/thing:4487170 What you need : - 4 X 625ZZ bearings, you can buy them from Amazon or you can break 2 old wheels from your Ender printer. You have to print : - file ”01_main_arm” X 1 - file ”02_sec_arm” X 1 - file ”03_wheel” X 3 - file ”04_wheel_shaft” X 4 - (use 100% infill !) Optional : - file ”05_wheel_cover” X 3 The middle section of the main arm may look fragile but believe me, it is not. I have been using this filament guide for a few days now, everything works as it should. I printed that file (and the file "02_sec_arm") with 25% infill and 1.2 wall thickness. For the "03" and "04" files I used 100% infill. Some components are a ”tight fit”, others might require gluing, depending on the accuracy of your printer. You can use small tools (like a small hammer or something similar) but if something seems too tight, then it is. Sanding some components is not a bad idea if they don't fit as they should.