MMU Filament Guide

In the images you see the final result as well as the steps it took. First I grind the peace with a 600 paper and afterwards I polished it with a multi tool (Dremel). I used PC4-M6 pneumatic connector tubes and screwed them in. Finally I mounted it with some left over Ikea screws onto my Ikea shelve.

I used the following PC4-M6 connectors: https://www.aliexpress.com/item/32877007745.html

Note:
You can find the Fusion 360 source in the downloadable files for customization.

Updates:
V10: Reduced hole size to prevent tube to get through the whole part.