Cutting biscuits in a frame-and-panel side proves trickier than in a solid-panel side. The problem lies not only in making matching sets of slots in the sides, shelves, top and bottom, but also in laying out the slots so that they don’t accidentally cut through the narrow stiles. This scrapwood support board addresses both issues quickly and easily. To make this jig, simply cut the support board to match the width of your frame and carefully mark out the biscuit slot locations.
Now, align the front edge of the support board flush with the front edge of the side, clamp it securely in place, and use it to guide the biscuit joiner as you slot the solid ends for the top and bottom panels. To slot the stiles for the shelves, bridge it over the panel section and slot at the marked pencil lines, as shown. To cut matching edge slots, simply clamp the support board on top of your panel and align your biscuit joiner with the layout lines. Again, make sure to register the board with the front edge of the panels.
