A blade positioner for a scroll saw is disclosed which permits adjustment of the saw blade relative to the pivoting beams or arms of the scroll saw so that the plane movement of the blade is coincident with the blade direction, particularly in the event that the ends of the arms are somewhat misaligned with respect to the plane of travel of the arms due to inaccuracies of the arm pivot bearing locations. Also disclosed is an anti-rattle spring interposed between the work table and work table support so as to minimize rattle of the work table relative to the support in all directions.