MMU version of K-9

K-9 is Marvin the Martian's pet alien dog, from Warner Bros.' Looney Tunes and Merrie Melodies cartoons.

The model, as presented is 115mm tall.

This MMU model was derived from my non-MMU model (reworked for a clean MMU print, ears and broom were slightly changed).

Enjoy!

Print instructions

Important: I used seven colors for this print

I've included a Prusa Slicer 3MF file that I used for this print.

To get the seven colors:

• after the eyes finish and before the broom starts (I put a pause at the 96.4mm layer)
• swap in the yellow for the white that is no longer needed
• swap in the gold/brown for the red that is no longer needed

For filament swaps using the MMU3, at the pause I loosen the two pressure screws on the MMU3 unit. Opening the top allows for a manual filament load. I pull out the old filament, and manually feed the new filament to the opening. I then simply guide it into the second opening where it is now in position to be picked up when next needed. Resume from pause and you now have seven colors.

Individual STL parts are also included for other slicers.

Extra note: I used the PrusaSlicer .2mm speed defaults for my MK4/MMU3, except for the following changes:

1 - I used organic supports and set the overhang parameter to 30deg.

Be sure to check/set the purge amounts for the colors based on your filament brand. I was able to use the PrusaSlicer defaults without issue