Dice dotting machine - GIF

[mklotz]

Perhaps to compensate for uneven weights ensuring that dice manufactured together will not roll the same numbers more frequently than others?

To keep the die balanced the spots are drilled such that spots on opposing faces always add to seven. Presumably that was accomplished when the dice were spot drilled in an earlier process. The random arrangement of dots to which I referred is the arrangement of the spots facing upwards under the paint dispenser.

A video showing the entire process of die construction would be helpful.