Abstract: The panel saw apparatus includes a pair of laterally spaced H-beams are attached. A first pair of leg portions of one H-beam have slots adjacent its ends so that this H-beam can, by means of bolts passing through the slots, be adjusted into a parallel relationship with the other H-beam. The second pair of leg portions of each H-beam each have a groove formed therein so that a strip portion of a rail member can be press-fitted therein. The rail members have shoulders that bear against the second leg portions of the H-beam with which they are associated. A carriage has wheels complementally grooved with respect to angled surfaces on the rail members thereby constraining the carriage for reciprocal movement. The carriage includes a turntable mounted for rotation with respect to a plate and its circular opening. An electric motor is mounted on one side of the turntable and a saw mount on the other side; a flexible belt extends through a segmental opening in the plate.

Abstract: In a preferred form, the dust extraction system is intended to be used in combination with a conventional router. The system includes a plate, one side of which confronts the router's ring base. The plate has a relatively small hole through which the cutter bit extends and an offset larger hole through which dust-laden air is withdrawn. A recessed sub base, preferably of plastic, confronts the other side of the plate, the sub base also having a relatively large hole through which the bit extends. Both the plate and the sub base conform in shape to each other, having portions extending laterally to one side of the router's base. The offset hole in the plate is formed in its laterally extending portion and the recess or cavity in the sub base, forming a passage with the overlying plate, extends to this hole. A sleeve surrounding the hole enables a source of subatmospheric pressure to be connected in order to extract the dust produced by the router's bit.