Download Free 3D Model Ultramarine Purity Seal 3D Print Model

Summary
Converted from https://www.ifind3d.com/stl-file/3D-model/design/11898 to incorporate the Ultramarine-logo and a flat bottom and cleaner area inside of the seal. I had to print the Ultramarine-logo as a separate piece since it was easier for the printer that way.
Post-Printing

This is the final product made as a gift for my dear friend how (like me) is really into Warhammer 40k. I painted the seal first with gesso and the gave it four layers of red. The paper is thick watercolor paper soaked in coffee and I used actual ink and an ink pen to write nonsense about painting and stuff (in Finnish).
How I Designed This
I found the actual seal from the address above and used tinkercad to add and remodel it a bit. I used inkscape to design the logo and then just threw it to tinkercad.