Creality Ender-3 Pro filament guide

thingiverse

This is an easy-to-use filament guide and measuring gauge for the Creality Ender-3 Pro (and possibly the Ender-3, let me know!). This guide ensures smooth filament entry into the extruder without bending, reducing the likelihood of breakages. The kit contains one bracket and two guide wheel options. Option 1 uses a regular 16mm press fit bearing that must be purchased separately. Option 2 utilizes a spare roller leftover from my Creality Ender-3 Pro Linear Bearing Z-Axis conversion (available at https://www.thingiverse.com/thing:4431225). Both wheels are designed to rotate half a turn for every 100mm of filament used, which can be easily noted by marks viewed through a slot in the mounting bracket. The bracket mounts directly to the left X-axis chassis end plate using the existing roller holes. To secure it properly, you'll need to replace the 2x 35mm M5 bolts with 2x 45mm M5 bolts that came spare with the printer. All parts have a 0.2mm tolerance. I hope this design works for you and please give credit if you share or link to it! If using Option 1, you'll need to purchase: * One O.D-16mm I.D-5mm W-5mm bearing * One 20mm M5 bolt (there should be a spare one that came with your printer) You can find an example of what to order at https://uk.rs-online.com/web/p/ball-bearings/6189907. Fitting Guide: Step 1: Option 1 - Press fit the bearing into the guide wheel. Option 2 - Clip the spare roller into the guide wheel (this is removable and won't damage the roller, so don't worry). Step 2: Use a 20mm x M5 bolt to attach the guide wheel to the bracket. Make sure the bearing sits against the bracket; this is crucial with option 1! Step 3: Remove the existing 35mm x M5 bolts fixing the left outer rollers to the X-axis chassis end plate. Keep the nuts for the next step, and replace them with 45mm x M5 bolts. Step 4: Insert the M5 nuts into the appropriate holes in the bracket and attach to the rear of the chassis end plate, tightening the bolts to give the desired resistance on the rollers. The guide wheel should line up exactly with the filament hole in the extruder. That's it! If this design has helped fix your machine and saved you a few pounds at the same time, please consider donating what you feel is fair to https://paypal.me/kitkaye. Every little helps!