Minature holder/transport

When I just got a 3D printer I started printing miniatures to use in my DND games only to find out that a shopping back tends to break some of them. So i needed a different way to transport them. I made a ''briefcase'' of MDF which would fit a layered miniature holder. Limited by the size of my print bed I made them in a size where I would be able to glue the side holders to the sides of the case and the center risers in the middle of them.

The risers and outer supports have a pattern at the