filament return pulley for Vellemann Vertex 3D Delta K8800

filament return pulley for Vellemann Vertex 3D Delta K8800

thingiverse

For some kind of filament spools it is necessary to have a return pulley. You can use 2 M4x16mm countersunk screws for the riser to fix this. I used 2 608zz bearings UPDATE: an improved version better for large spools. It reduces the problem that the filament stays in the gap between pulley and printer top.

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