Ender 3 Spool Filament Guide

thingiverse

As usual, there are a multitude of filament guide options available on Thingiverse. I came across one that caught my eye, https://www.thingiverse.com/thing:2917932 but unfortunately, I couldn't get the base to fit properly. I decided to take some inspiration from this design and modify several elements to create something that suited my needs. I opted for a single-part design with two longer extension fingers that slide directly into the top frame rail. I also extended the guide section to allow for side-to-side movement of the filament on the spool, ensuring smooth operation. This Filament Guide aligns perfectly with my Extruder Filament Guide as well, https://www.thingiverse.com/thing:4039616. This part is intended to be printed with the flat top surface facing down on the print bed, accompanied by minimal supports for the finger extensions. I've also included a Test Base for printing a quick test to verify the fit of the push-in extensions on other printers. Since this is designed to be a precise interference fit, printing a test base will help you determine the correct sizing for your specific printer or material. Although these dimensions worked perfectly on my printer, I recommend resizing the part by 1% up or down until you achieve the ideal fit. Printing the Test Base in the same orientation as the full part will ensure accurate results.