Filament guide for on (reprappro)NEMA17 motor / NEMA17 clamp

Update: Fallen out of my favor, but whether it is useful depends on from where the filament comes. (And the openscad could be used to put something else on the stepper)

As you can see i have one on the X axis motor of the reprappro mendel. Note that this motor moves up and down with the z axis but it doesnt seem to cause problems.

In my caes the filament goes at the lower part of the guide in my setup. I fixed it with some tape, but hopefully the constriction in the newer version fixes i