d6 Dice Master

Absolutely print this in resin. The inner die can be left as is, the outer needs to be polished. I have tried various brands of sanding/polishing paper and the zona papers really are the best I've used by a mile. 

Keep in mind that 3d printer resin will inhibit platinum based silicones. In my expirience, washing the prints really well and curing them longer than you normally need to, in combination with the polishing part, circumvents this issue.
 

I used Siraya Tech fast in navy grey to print and the Siraya Tech defiant 25 silicone to cast and didn't have any problems.