Coffee Cup Fixed

The original Coffee Cup by @barspin is easily the most used item I printed so far.

I printed two cups using the original models but had problems to get the second (black cup) watertight. I solved that with a thin layer of glue in the problematic area. But that spoiled the food-safety and you can see it "shimmering".

I wondered why it was not being watertight and checked the model. It contains of two volume objects. One is to make the bottom plain and printable without supports. It sits in