I have a 3D mesh that I intend to print, a robot head. The head should be printed in a variety of colors, but the originator of the mesh didn't part it out. Here's an example:
The red section is what I'd like to separate from the rest of the head. When I do that, here's what it looks like:
I know how to separate parts, but after I do so, there's a gaping hole in the main section of the head. It's not manifold (watertight), and therefore not printable. My idea is this: After the two sections are separated, I want to make both parts manifold, and for the gaps in the geometry to be filled while following the original curvature of the head. That way I can print both the head and the "scalp" part (for lack of a better word) in different colors, and then glue the scalp in place.
I hope my explanation makes sense. Here's the link to my .blend: https://www.mediafire.com/file_premium/1edxr0mmubpmh9t/UC_WIP.blend/file