I've spent last three days trying to create a model of a planet for 3D printing with a displacement applied to its external surface and one of the polar caps removed so to create a something like a bowl.
It's essentially a thin (but not zero thickness) sphere with rough surface on the outside and smooth on the inside. Here is what I did:
- Create large sphere, unwarp it, apply planet texture a a displacement.
- Create smaller sphere inside the large one, invert the normals.
- Join the two.
- Create a plane and subtract it from the 3.
The problem here is that subtraction of a plane does not create bowl "opening". It remains closed, albeit the boolean subtraction works. But it looks like a solid sphere with one of the caps cut and not like a bowl.
What am I missing here? Thanks!