I designed a mug in Enroute (the software I use for the Multicam CNC router) I had to do each Half of the mug because a router such as mine cannot do any under cutting ( think of a ball, I can cut the top half but anything below that cuts straight down from the edges).
These mugs are going to be 7.5" in diameter and about 10" tall.
Then using stretch wrap packing tape, gorilla glue,and some spring clamps the four pieces for each mug became one.
A couple layers of various paints and It's really looking as I envisioned.
I wasn't quite sure how I was going to paint translucent glass, but I did it, Kool!