Customizable Compartment Box V3

Here is version 3 of my sorting box. Like [V2](https://www.thingiverse.com/thing:3145489), it's also meant for smaller boxes.
Unlike [V1](https://www.thingiverse.com/thing:3135033) and V2, V3 can be printed in a single job.

Despite the small wall thickness, it is quite stable because of the integrated bracing. In addition, it is printable without retraction.

If "fhs, floor height (solid)" is set to zero, you will probably see some warping at the corners....find them on the photos ;-). Th