After the glue dries, remove the screws from the outer half laps of one of the two frames. Set the scrap wood you used for the backing aside.
Stand one of the 14-1/4" pieces of hardwood on edge and align it with one of the short sides of the frame. Put the other 14-1/4" hardwood piece in place on the opposite edge to keep the frame parallel with the table. Set the two pieces so they are flush with what will become the back of the frame (they should protrude out of the front of the frame by 2").
Using the same bit you used to affix the frame to the scrap, drill through the counterbored holes on the perimeter of the frame into the vertical pieces and affix them with 1-5/8" screws.
Next, remove the screws from the center half laps. Align the two 13-1/2" pieces side by side, one on each side of the center line, flush with the back of the unit (protruding 1-1/4" out the front side). Again, these should match up with the screw holes from the center half laps. Pre-drill and affix with 1-5/8" screws.
Now, flip the entire unit over and attach the opposite frame in exactly the same manner. The carcase will now be complete.
At this point, we'll begin to add some hardwood trim pieces to the carcase. Cut two pieces of hardwood to 24-1/2" long by 2" wide. These two pieces will be attached to the top and bottom of the carcase at the front of the unit, right next to the frames. Align them flush with the front and sides of the side standards, then pre-drill and counterbore pilot holes before attaching to the carcase. See the
project plans for details.
Lastly, before we can add the hardwood skin to the unit, we need to affix a trim piece to the center standards. Cut a piece of hardwood 3" in length by 1-1/2" in width. Simply glue this piece to the two center standards and hold in place with a clamp, as shown in the picture above.