Prusa MK2 filament guide

This is a simple filement guide which I designed for my Prusa. It is super simple to juse. Just use hexagon hole on the Prusa z rod mount to attach small part, and slide bigger one on the frame center. You will also need 35cm of ptfe tube. To have complete system you will also need spool holder (I use this one http://www.thingiverse.com/thing:1806139 )

There is NO negative effect on print quality. If you push your ptfe all way into the hole, there is very little additional drag (just make sure filament is not grinding any edges). If you compare it to stock prusa spool holder, it is even easier to pull filament from the spool. As a proof photo of green benchy :)

I keep this one as in progress, because I want feedback regarding tolerances. Everything is tight fit and works great on my side, but want other people to comment.

If you made it, please share photo. It is always nice to see one :)

edit 14.05.2017:
* Frame center.stl replaced with Frame center_large.stl. Geometry i