Ender-3 V3 KE Filament Guide
Description
This design allows you to relocate the filament spool holder from the top frame of your Ender-3 V3 KE printer to a spool holder or filament dryer box located next to the printer. I have included the files to print both a left-side feeding guide and a right-side feeding guide (only the pulley mount and filament guide differ between the left feed/right feed versions.) The pulley requires a single 10mm x 26mm x 8mm 6000-2RS ball bearing. (https://www.amazon.com/CNXBB-6000-2RS-Bearings-10x26x8mm-Pre-Lubricated/dp/B09N12VWX1/?th=1) This design is based on the Filament Feeder System for Ender-3 V3 KE design (https://www.thingiverse.com/thing:6522683) by Lonthor. (https://www.thingiverse.com/Lonthor) The primary differences between the original design and this design are the threaded pulley axle, attached filament guide arm and the ability to print a left or right feeding version of guide. Printing: I printed this filament guide on a Creality Ender-3 V3 KE using generic PLA filament and the default 0.20mm Standard settings in Creality Print 6.0. Supports are necessary for printing the axle. I printed the axle standing upright with the short end of the axle on the build plate. In Creality Print 6.0 I used Support Type: Normal(manual) Style: Grid. I included a slightly raised ring on the axle flange to make using the Fill tool in Support Painting easy. I did not use supports for any of the other parts in this design. Assembly: Press the bearing into the front side of the pulley hub opening until it contacts the spacing ring inside the back side of the hub opening. The parts are assembled in this order: Nut - 16mm OD Washer - Stand - Axel - Guard - 16mm OD Washer - Pulley - 16mm OD Washer - 32mm OD Washer - Round Nut. See the Detail image for an exploded view of the assembly. I also chased the threads of the axle and nuts to make assembly easier, but this may not be necessary with your prints. The filament guide arm simply presses into the triangular hole in the pulley mount. The entire assembly then mounts to the top frame of the printer using the two screws that were used to attach the filament spool holder and the filament runout sensor mounts to the hole in the pulley mount using screw and bushing provided with it.
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