Multi-Material Filament Guide

I have my i3 mk2 in an enclosure and was having problems after upgrading to the multi material setup with routing the filament out of way. I designed this so that I could route PTFE tubing from the spool holders to this block attached with pneumatic fittings. The filament then routes out the top and directly into the extruders. the exit path for the filament is also wide enough to insert PTFE tubing tightly in case I or anyone else has a need to keep the filament enclosed throughout the whole chain.

Sizes
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Filleted openings on "top" - fits 4mm outside diameter ptfe tube
Flat openings on "bottom" - fits PC4 – M6 ptfe fitting
Screw holes - designed for flat countersunk M4