Prusa MMU Jig

This is the modified version of the prusa3d's mmu jig where you don't need as much metal component as the official one; cooling tube, brass screw insert for the pneumatic fittings.

All of these has 6mm diameter for the pneumatic fitting tube and does not require brass screw insert.

I included 3 versions:
v1. Filament pathway are similar to the original, you can use prusa3d's cooling tube as well
v2. Smoother filament pathway, no cooling tube required
v3. Square/diamond pathway

Oddly, I had problems with v1 and v2 where the filament won't able to go through the jig where it works with v3 which has diamond/square shaped pathway. There's a little chance that if you print the v1 and v2 or the original prusa3d's mmu design, the filament unable to go through the jig. This might be due to some filament sagged in there somewhere making the filament unable to go through smoothly.