After production several hundred pieces at a time are put into a mixer and tumbled for several hours. The tumbling process deburrs (smooths out) the edges and gives the metal discs a distressed look. Next the discs are sprayed lightly, tumbled some more, and then air dried for several hours.
These discs are thinner gauge metal than our DP1, DP2, DP3, and DP4 discs.