Abstract: A power actuated miter saw has an adjustable rotatable mounting with respect to an elongated work holder so that the saw can be set in any one of a number of angular positions for the cut. The saw is lowered by a forward facing handle adjacent to which is a circular scale showing the angle. Mutually rotating parts have a 360.degree. bearing ring between them near the perimeter to provide abundant stability and also seal the movable members to keep them free of dust. A sawdust discharge travels with the saw blade to collect and discharge sawdust generated by the operation in a direction away from the operator. The saw blade is guarded while at rest as well as during a cutting operation on the work.