WAC 296-806-48068. Guard planers

(1) You must make sure all cutting heads, and saws if used, are covered by a guard that: (a) Is metal. (b) Forms all or part of the exhaust hood if an exhaust system is used. (2) You must make sure a guard constructed from: (a) Sheet metal is at least one-sixteenth inch thick. (b) Cast iron is at least three-sixteenths inch thick.