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filament return pulley for Vellemann Vertex 3D Delta K8800

by shelxle

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filament guide K8800 velleman K8800 vertex delta vertex delta 3d filament guide K8800 velleman K8800 vertex delta vertex delta 3d

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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