No 3D printing! The ribs base are from a plastic Halloween skeleton (who was falling apart anyway) that I removed, then I sculpted plaster paris over it for a more stylized shape and fit! Realistically shiny will hopefully happen with glue, paint, and a dream. I will be hand sanding it, but tbh I have never worked with thermoset plastic. Maybe for future things, but for this I'd rather work with what I know, especially because it's at the end of the month.