filament return pulley for Vellemann Vertex 3D Delta K8800
Description
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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