Filament Guide MK8 Extruder

This is a quick filament guide for MK8 style Extruders. In particular it was designed for the MacEwen MK8 Extruder. This thing helps to reduce the gap between gear and PTFE tube. There are two versions. Version 2 is with an added part to close the gab between the guide and the groove, so that flexible filament cannot slip out there.