PTFE filament spool bearing ender3

thingiverse

Hello!\r\n\r\nMy Ender 3 printer had some issues pulling filament from large spools, so I built a simple bearing using a 4mm PTFE pipe as a sliding component. Instead of waiting for a replacement bearing from the shop, I took matters into my own hands and created this DIY solution.\r\n\r\nThis bearing fits any spool with a 50mm inner diameter and a filament hub with a 30mm diameter. Here are the parts you'll need to print it:\r\n- Any type of filament (PLA, PETG, ABS) for printing\r\n- A small rubber band or string or wire\r\n- PTFE pipe with an outside diameter of 4mm and a length of 106.8mm per bearing\r\n\r\nTo print the bearing, you'll need to create four identical parts and two identical stopper parts.\r\n\r\nAssembling the bearing is a straightforward process: for each part, you'll need two printed halves and about 106mm of PTFE pipe. Place the PTFE pipe into the groove on the hub and then push the whole bearing half into the spool. Repeat this process for the second side.\r\n\r\nFinally, make sure the rim of the bearing half goes inside, and assemble the stopper at the free end of the hub to prevent the bearings from traveling too far to the edge.