When routing irregular shapes with a pilot bearing bit, always use a Safety Guide Pin in your table mounted router plate. The pin provides support for your material and also helps prevent the bit from grabbing the material before making contact with the bit bearing.
Quality table-mount base plates have a pre-drilled hole for the safety guide pin. The Oak Park base plate we use on “the Router Workshop” has this hole pre-drilled and is located close to the center hole of the base plate and between the bit and the operator. Insert the safety guide pin in place.