Simple MK7 Driver Flex and Hard Material - Bowden Extruder

I've been a long to search on Thingiverse an extruder than can print easily flexible filament.

I haven't find what i want so i design this, i've to get some more tests to be reliable.

I uses a 625ZZ bearing and an MK7 Drive Gear, and it's designed to place a cutted bowden tube (4mm) than can be cut in the middle to the shape of the MK7 drive gear and the bearing, in order to prevent flexible filament to slip off and enroll.

Thanks to AxMod3DPrint for his Nema17 mount for 2020 extrusion