Helper to keep track of the red and grey shells in Buckshot Roulette.

Plates 3 and 4 should ideally be printed in vase mode. But currently bambustudio doesn't allow setting vase mode for indivdual plates.

I recommend printing plates 1 and 2 normally and then enabling vase mode for Plates 3 and 4.

Print plate 3 and 4 twice so that you have 8 shells each.

Assemble with a drop of glue.