Abstract: A portable combination saw which includes a generally horizontally disposed work platform having a circular opening formed therethrough. A circular support is rotatably mounted within the circular opening and has an elongated slot formed therethrough. A motor is movably mounted beneath the circular support such that the blade thereof extends upwardly through the slot and is movable along the slot. A fence mounts across an upper surface of the platform and the circular support. The fence has an arc-like cutout to provide clearance for the blade when it is moved along the slot. Locking devices enable the circular support to be fixed in position relative to the platform and the saw to be fixed in position relative to the slot in the circular support. A blade height and angle adjustment assembly allows the saw blade to be releasably locked at a predetermined angle and height relative to the circular support.