Modeled in Fusion 360, which has given me nothing but trouble since its last update. There are two versions, one filleted and the other chamfered. I think that the chamfered version printed better, but your mileage may vary. Native size is 36mm cubed, but it should scale up or down just fine. I printed a set of the filleted version at 18mm that looks fine.
dice.dxf | 240.6KB | |
dice.f3z | 99.8KB | |
dice.stp | 12.6KB | |
diceChamfer.stl | 3.2MB | |
diceFillet.stl | 3.5MB |