Use a jointer to put a 22 ½ degree bevel on a strip of hardwood.
Cut the beveled edge on the table saw.
Screw the slotted plywood pieces to the beveled hardwood strip.
Drill and mount the two machine screws on the bottom side of the jointer fence. The slot allows the beveled strip to move in and out when it needs adjusting.
Flush the outfeed edge with the bit and clamp to the router table.