Argentine Marine Infantry Shield

It is important that for the red center plate and the internal small shield, you pause the print on the last layer of each.

And then place the black filament in the AMS socket you previously selected before printing.

Example:
For the red center, I chose 4 colors, one in each AMS socket, and I chose the black color in the same slot where I put the yellow. When the print reaches the last layer, it will pause. There, we remove the yellow spool and put in the black one, resume printing, and that's it.

Then glue the parts with cyanoacrylate or the superglue you use, and voilà.