I was looking for a dice box to easily carry my 4 dice sets and two minis for my DnD/Pathfinder games. The ones i found online didn't really match my needs as most of them didn't fit 4 dice sets and my dices and minis were a tiny bit too big for them. I also wanted include a dice tray so i didn't always have to carry a separate one. So i created my own model to fit my needs.

The whole box with the lid on is 246 x 138.5 x 35.5mm 
The 4 slots for the dices are 160 x 30 x 27.5mm
The 2 slots for the minis are 62.5 x 47.5 x 27.5mm
The 8 slots for the magnets are 5.3 x 3.2mm (which snuggly fits my 5x3mm magnets)

I also put some felt inserts in the box to protect the dices/minis and to stop the rattling when carrying the box. The felt for the dice tray covers the magnets, but the magnets are still strong enough so you can carry the box while only holding the lid. 

The whole thing printed without any problems on my Bambulab P1S with standard settings (0.20mm Standard).

If you have any issues with the file or would like to have a variation of it, please let me know and i can try to update it. 

Cheers
ClassyMarmot