Does anyone know how I may be able to form a sphere from cardstock without using truncated cones? A paper-mache technique is what I'm looking for... I just don't know if it'll work. I'm needing a thick-walled sphere, slightly larger than a golf ball, for use in a scratchbuild I'm working on. It needs to be hollow as well. It's part of a concept Venus lander, and it's going to be the pressure hull eventually. I'll probably paint it as well, so the outside doesn't need to be totally blank white. I'll give it a few coats of primer and sand it smooth before painting. Any tips?