>>2930764
Like pic related?

>>2930763
>Can you do multimaterial printing?
Not without quite a bit of hassle. I only have one extruder+nozzle.
>prints that just do different colours in different layers very thinly so it ends up making a picture. The name is escaping me right now
Posterization? I don't know if the physical process has a different name, but posterization is when you break up an image into a few big solid-color blobs.
I've actually dabbled in that myself, before. I printed a black baseplate and then layers of white filament on top of it. Since white filament is nearly transparent when it is thin, it ended up causing a grayscale effect where the print would transition from black through various shades of gray to white depending on how many layers of white each area had on top of it.
I don't think I could do something like that with just silver and copper, though.
I've seen lineart-style 2D pictures on Thingiverse that are designed to be printed in just one color (optionally with a second color as a backing) but I guess I don't see much... point to it? Like I find it hard to believe that someone would hang an 8"x8" plastic panel on their wall that depicts a 2D image that they could just as easily print on paper and put in a frame.

Since making that post I've found some models for large toy coins that I think would be a good fit for this, especially since I've got silver and copper to use, as well as little gemstone-looking things.
I'm also going to try doubling/tripling the size of the octopus and seeing if its leg joints can hold up then.