I have created Marvin in dual color/material (From my totally remade 3d object)
The one with a white helmet is Glow in the Dark.
and the blue one is transparent blue with a Gray body.
My remade Marvin for dual extrusion:
Original (The monochrome Gray Marvin):
https://www.youmagine.com/designs/3d-hubs-marvin-key-chain--4
PS. If you have tips how i can improve my print quality please give them.










