Abstract: An attachment for circular saws that supports a workpiece for movement past the saw blade. The attachment includes a saw-top plate that is adapted to cover and slide over the saw table surface of the circular saw. A guide on the saw-top plate fits within a groove on the saw table to allow longitudinal translational movement of the attachment. The saw-top plate may be supported on bearing rollers mounted to the saw table. A cut-off guide and a workpiece stop are provided on the saw-top plate that serve to position the workpiece relative to the saw blade. A hold-down device, operating also as a blade guard, is used to hold the workpiece secure on the saw-top plate as it is moved past the blade.