Can the rubber bands be used if they broke or if their cut? Say instead of a shaft use a Rubberband and tie a not on both ends.
I would presume the same rule would apply to rubber-bands as any other legal part. <R13> Parts may NOT be modified.
As a inspector at a few VEX IQ event and partner, my understanding of the rules are that no parts can be modified. Therefore I would not allow cut rubber bands to pass. If these bands break then I would ask the teams to simply replace them.