Make the Tabletop
Set biscuit joiner depth to #20. Lay the four best planks out on a flat surface and arrange them in final position. With a pencil and working across two boards at a time, make a mark at every 8-inch point along the seam of two boards. After marks are made, use the joiner to cut the biscuit slots at each location. Align the reference mark on the tool (similar to circular saw) and hold the top plate firmly flat against the board. In one smooth motion, plunge the tool until it hits the stop. Note: Do not cut joints on outside edges of first and last board.
After all slots are cut, stand each board on end and coat the edge of jointed side with wood glue. Next coat the biscuits with glue. Insert biscuits in one side only of each board, then insert glued biscuits in the empty joint of the next board. Assemble planks in order until the top is complete. Don't worry about small gaps. Next, carefully lay the top down and attach pipe clamps at roughly 1' intervals. Slowly tighten each pipe clamp in a consistent fashion until the gaps disappear*. Small amounts of glue can be removed when dry; scrape up any puddled glue with a plastic putty knife. To minimize sanding later, avoid working glue into the top of the wood. Let the top set overnight.
Once the top is dry, remove the clamps from the top and check for relative flatness to the assembly. Use a small hand-held planer or razor to remove any dried glue. Mark each end 1/2" in from the shortest board and make a clean perpendicular cross cut.
Do not over-tighten the pipe clamps as the top will eventually bow. Clamp a cross piece of 2x4 (perpendicular to the planks) before fully tightening the clamps to keep planks flat during the drying process.