Section R. 408.16235 - Expansion moldingRule 6235.
(1) A shiplap machine shall have the milling cutters guarded or enclosed at the point of operation to prevent contact with the operator's fingers. A barrier shall be provided in front of the in-running nip points of the feed rollers to within 3/8 of an inch of the material.(2) A multiple hot-wire cutter shall have a manual control for setup use only. Any control for the automatic cycle shall be interlocked with the carriage so that the hotwire cutter is activated before the carriage moves and is shut off when the carriage stops.(3) A multiple hot-wire cutter shall be equipped on both sides of the moving portion of the machine with a barrier that is designed to prevent an employee from reaching the hot wires.(4) An expansion block mold shall have reinforcements necessary to contain the force of the expanding plastic particles. Locking mechanisms shall not be more than 24 inches apart.(5) A custom expansion block machine shall protect the operator by means of an interlocked gate across the mold parting line or by a device as prescribed by the provisions of R 408.16225. When the gate is opened or removed, the machine shall cease to function until the gate is closed.Mich. Admin. Code R. 408.16235