Simple 1.75mm Bowden Extruder

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This is a straightforward, compact Bowden extruder design that drives directly, utilizing an MK8 drive gear and a 625 idler bearing. The extruder has been engineered to be incredibly easy to access and source; it requires just two bolt lengths and employs binder clip arms to tension the idler arm. As it stands, the extruder fits snugly on the 10mm Bowden coupling that comes with E3D hotends. Furthermore, the extruder mount works seamlessly with 15mm aluminum extrusion.