Impossible Dovetail Puzzle Box, Remixed

This is a remix of RWReese's (most excellent) Impossible Dovetail Puzzle Box, with a few (minor) changes:

1) rounded some of the sharper corners
2) reduced the height of the bottom piece since it looked out of proportion (to me), and isn't really what takes most of the stress
3) enlarged the compartment

I've had a few of these made from wood, and given the secret to opening them, none of them lasted that long. Here's hoping plastic works better.