Anet A8 Filament Sensor and integrated filament sensor guide

This is a sensor guide for 1.75mm filament. The tolerances are a little tight in this version with only 0.25mm between the hold and the filament, This I have found necessary for the optical sensor to function without failure.

Although this is quite a large print and does not need allot of internal support ( print at 10%), to attach the sensor, I have found self tapping screws from the Z-Stop sensor work well... I have left the screw holes kinda small so self tapping screws can be used. I wi