This stackable case has 7 compartments to accomodate your dice. You don't necessarily have to but you can use the bottom and top parts to separate segments.
Print the files in the orientation they come with. It involves a bit of bridging for the inside lid but nothing risky.
I designed it with a .4 nozzle in mind. If you're using a .6 nozzle, this is probably a use case for the arachne perimeter generator. Most of the walls are 1.35 mm thick (3x 0.45), which means that - depending on your machine - crossing sections can potentially show through. This dice case is meant for organizing rather than display.

Interested in more dice stuff? Try these:

Spiral Vase Dice Tower

Dice Catapult

Dice Bookend

D6 on a Chain Bookmark