Using Cauls and Playing Cards for Even Clamp Pressure

George Vondriska teaches you a neat little trick for creating tighter biscuit joints on your shelving. After inserting the biscuits into their slots and filling them with glue, he likes to put two playing cards between the case side of a shelf that will be clamped and a flat caul. This will allow the glue to dry uniformly and seamlessly across the entire edge of the shelf.