how to make a hollow object solid?

Hello
I would like to ask how to make a hollow object solid? THANKS :slight_smile:

Most of the time this will work by simply deleting the inner object (to split, use “…” button in the scene menu, then click “separate”)

If that doesn’t work it means the inner and outer objects are connected for example by a hole. Then you’d have to locate that hole and trim it away first.