In the empty frame, drill one 1/16" pilot hole 1/4" deep and 3/32" clearance hole through just the plastic near the corner and attach the Rabbetspace temporarily with a screw at the corner. (A clearance hole is necessary to prevent buckling from expansion.) A special drill is available from Frame Tek that drills both holes at the same time. Now drill all the rest of the holes for that side. Make sure that the inside of the Rabbetspace is flush with the inside of the frame when you drill each hole. |