Ender 3 Non-selfrotating Roll Support for Spools

thingiverse

This modifies the roller bearing for a spool holder originally delivered with an Ender 3v2 (30 mm diameter). Actually, the design of this roller bearing fits perfectly for me. But unfortunately, the bearings on the axle twist during printing, so the spool no longer rotates properly. To prevent this twisting, this modification consists of two parts: - A guiding rail for the bottom of the axle of the original Ender 3v2 roll holder. It is simply plugged onto the axle with the help of three pins. - A groove on the inner lower side to the original design (https://www.thingiverse.com/thing:4804090). With this groove and the rail mounted, the two clamps can be easily moved along the axis to adjust to the spool width, but can no longer twist. To mount the rail, drill three holes with diameter 5 mm in the axis of the original Ender roll holder. One in the middle and and the others with a distance of 35 mm each, exactly in line and parallel to the axle. Then press the rail into the holes and mount the two clamps around it.