Radioactive Sample Box V2 (2 sizes)

A few years ago, I published a radioactive sample box which I had designed to hold my trinitite collection. ( http://www.thingiverse.com/thing:48031 ). At the time, I was relatively new to Sketchup. As a result, it's clunky and polygonal, the top has way too much material in it, and the interface between the top and bottom was less than perfect. In short, it's functional but ugly.

So, I redesigned it in Cubify Design. It's the exact same dimensions , but the top and bottom mesh brilliantly no