67P - Churyumov–Gerasimenko - Tchouri

This 3d model is a mix of photogrammetry and data from ESA. The nucleus is in 4 parts and I added a centering pin's model. You need to print 4 of them.

I would suggest trying to print one centering pin, then adjust the scale if need be. You want a snug fit. On my test, I kept a 0.1mm gap on the diameter.

If you plan to paint it, I would suggest finishing with a good matte clear coat. With a rocky body, the less specular reflection you got, the better.

The model's scale is 1/20000.