A wood working machine includes a mounting plate assembly for supporting a cutting tool, the assembly including a base plate, first and second intermediate plates on the base plate, and first and second guide plate elements pivotally supported on the intermediate plates, and a cutting tool support plate slidably disposed between the guide plate elements, the guide plate elements being positionable at angular intervals with respect to the intermediate plates, whereby the cutting tool support plate is slidably movable on the base plate between the guide plate elements at a prescribed angle. The mounting plate assembly may include laser sources providing crossed laser beams for positioning the tool bit of the cutting tool near a work piece, and light sources for illuminating the tool bit. A digital sensor may be included for positioning of the work piece.