Chaos balancer

thingiverse

This balancer is engineered specifically for 8mm shafts. Print two identical units, then fill their inner compartments with denser particles that can redistribute and settle as needed. These particles should weigh less than the balancing weight but more than half of the compartment's volume. As the balancer spins up, the resulting vibrations cause the particles to reposition until they reach a state of equilibrium with the unbalanced mass. At this point, the vibration ceases and the particles come to rest, much like in CD drives where such technology is utilized.