Abstract: Workpieces with alternating contour mating surfaces are produced by a routing tool comprising a working portion having an axis and an outer contour shaped so that in an axial cross-section of the working portion the outer contour includes a plurality of straight lines arranged in a consecutive order and each extending in a direction substantially along the axis.

Abstract: A power tool for trimming laminate having a motor, a motor housing, interchangeable bases, and a clamping ring. The motor housing has a lower portion having a smaller diameter than that of the rest of the housing. The clamping ring extends from and over the base and clamps around the lower portion of the motor housing. The interchangeable bases are formed as a trim router, laminate trimmer, offset trimmer, and tilt base trimmer, all of which clamp onto the lower portion of the motor housing so that the same motor can be used with any of the bases. The motor housing is also rotatable relative to the base into any one of a plurality of relative angular positions without affecting depth of cut of a bit.