Robo 3D Filament Holder Slot Aligned

This filament holder aligned the filament to the slot so that least string bending would incur before the filament feed into the extruder. It would fit filament holders of width of less than 74mm.

The filament could be held in two ways. With one pin going through the spool hole and held by Part 3 or with two pins and four bearing serves as bottom rolling wheels and hold the spool.

To install the hinge pin and ball bearing wheel: Put two ball bearing into one hinge pin. Push the hinge pin