Geeetech A10M filament guide

Update 2018-01-05: all files have been updated.

I mounted the extruders of our Geeetech A10M facing downwards, because i wouldn't have much chance to feed the printer when i mounted them according to the manual. But this resulted in the runout sensors tipping over so far that the filament got stuck. So i needed a small guide that keeps the filament running fairly straight from above into the extruder.

I've come up with three flavours, each also available in a mirrored variant.