Stand for @cicerone 's Anatomical Heart. Made using Meshmixer, subtracted the model from a cylinder and did a little clean-up.

Print shown here is 50% scale with his model in 50% scale as well.

Prusa

I3 MK3S

No

No

Here's the right link for Atomic Filament. Great material!

https://atomicfilament.com/collections/petg-3d-printer-filament-us-made-with-free-shipping/products/dark-cherry-red-petg-pro?variant=14079128141885