Cutting a hole in the model

…In order for a model to be hollow, there has to be…an opening for the unused material to come out from the inside.…Let's see how to cut a hole in the model.…Now, there's a bit of prep work to do before creating the hole.…I have my model in one, single sub-tool.…However, each of these pieces, like the hair,…the head, the jacket, are all separate objects.…It's going to be easier to work on them if I break them into separate sub-tools.…If your model is all one conjoined surface, that's…fine too, you can leave it the way it is.…

But I'm going to go to split under the sub…tool menu and go to split to similar parts.…Okay, so now I've got a separate sub tool for each of the parts of the model.…Next thing you want to do is identify if your surfaces are open or closed.…So, for example, we can see that this…model is all closed surfaces, there's no open edges.…So we need to cut some open edges into it.…I've got the jacket object selected.…And what I want to do is cut a hole in the base.…So, I'm going to go ahead and make my brush size a little bit…