This particular table, probably from the early part of the 20th century, had opened up on one of the boards that make up the table top. The method of using oak keys was employed to keep the joint closed once it had been cramped tight. The use of keys was widely used during the medieval period in door construction, when boards were kept tight with the use of such keys; on a larger scale, whole timber framed buildings are kept tight using a variation of this method. The process involved in this particular project was: 1. Cutting out a jig, 2. Making the keys to fit tight into the cut out, 3. Cramping the table top, 4. Routing out the recess for the keys, and 5. Fitting the keys. Once the glue had dried the cramps were removed.