This a 1:1 scale replica of the Martian Congressional Republic flag badge, worn by Martian delegation while on Earth during The Expanse's season 2.
The badge can be printed as is, and will only required light sanding. I advice to hot glue a magnet or a pin on the back to wear it :)
Show off your Martian colors Dustahs!
Supports are not required, you can print with or without support. A skirt can be Added.
I printed mines with a 10 mm skirt to avoid warping.
A light sanding of the surface might be required for higher quality, regarding how your printer manage the upper flat surfaces.
I made this flag using Autodesk Fusion360 CAD software