CMT Moulding BitsFor best results use these bits with 1800W routers. It is possible to use 1100W routers but only for brief passes that are short in depth. Shop tips: multiple pass operations require advance planning. To avoid making a mistake that could render it impossible to finish the job, carefully consider the entire cutting sequence before you begin. Safety tips: all large diameter bits such as these should be used with caution and on router tables equipped