Filament Roller Guide - Ender 3 MAX - Stock spool position

thingiverse

I couldn't fine a good roller that fit my needs for my E3MAX, I wanted to keep the spool on the side, but the filament going into the runout sensor definitely drags going in at angle, worse as you gain height. I knew I wanted one that mounted underneath the bracket, but could not find one. Then I found this roller designed for moving the filament up top and feeding down. The design lent itself to my needs by simply cutting off the vertical roller support arm from the mount, and then reattaching it on horizontally. This allows for a smoother more direct route into the runout sensor, and maintains that as the height increases. Plus, minimal supports are needed (depending on your printer). Follow the instructions for mounting the same as the original. Use a 608zz bearing with the v-ring and 2 spacers printed from the original design. I did have to increase the size of the ring slightly to fit around the bearing. I don't know if the bearing is out of spec or if my printer just was too tight on making the v-ring. the spacers fit fine. All credit goes to OpenDorrPolicy for the design, I just "bent it" for alternative use. I hope it is useful to others. UPDATED VERSION: In reprinting it for a better finish (after cleaning my nozzle etc) I decided to rework it a little bit. To accomplish two things. One, lower the roller down just a little to get better alignment with the runout sensor entry Two, clean up the form for a little more strength and better appearance. I guess that's three things. oh well. The new version should still print in under an hour with .2 res. Pics are added for V2, printed on and installed on my Ender 3 MAX. Still trying to figure out why my PRO is suddenly under extruding. UPDATED VERSION: So in the course of testing, I found that on occasion with low printing if there are a lot of retractions and the filament is feeding from the left or right of the spool, that it tends to come off the roller. I have a different plan in mind for my printer, but in case anyone else is running into this issue, I added a hood to the roller to hopefully keep the filament from coming off the roller on any feed back from retractions. Anyway, as always I hope this is of use to someone.