This is a simple mesh box that you can tweak to your needs. Its potential is near unbounded. You can customize it in the Customizer app (or just download the .scad file and play around!)- you can change:
- Bar diameter
- Wall bar multiplier
- Floor bar angle
- Floor bar multiplier
- Whether the corners have are chamfered
Some example generated boxes are included as stls.
Turn on your bridge settings and, so long as your wall multiplier is high enough that your bridges are adequately supported, you should be good to go.