How can I fix bad geometry inside the model
I have been trying to sculpt Melvin. The problem I have is that I get some weird geometry while sculpting (see screenshot). I don't know why exactly this happens but I suppose I used the wrong mode for dynamic topology. But in this case it started by inflating, so the space between the vertezies should have increased. But then weird artifacts started to appear. I tried to smooth them out but that didn't help either. I tried different modes of dynamic topology but it seems the problem is only getting worse.
I also tried to remove the inside geometry in edit-mode. But then I get many small holes. Should I just cut out the whole section?