Filament filter and alignment (Fabrikator)

I wanted to add a filament filter to my printer (Fabrikator) im sure it would work with any printer with a rod type filament holder
I also noticed that while doing bigger prints I was getting a lot of slack between the spool and the extruder... this was my answer...while filtering the filament its keeping even tension on the filament... the tolerances are very loose so it's able to move to where it needs to be on the rod...

what you need:
2x arms
1x filter/center
2x 3mm or 4-40 screws
fo