Making legs for a royal king size bed is a relatively simple process but it does require some special tools and supplies. The first step is to purchase the necessary materials. You will need wood, screws, and a saw. Next, measure and cut the wood to the desired length. Make sure to measure twice before cutting to ensure accuracy. Once the wood is cut to size, drill pilot holes for the screws in the wood. Then, use a countersink bit to create a hole that will fit the head of the screw. Finally, attach the legs to the bed frame with the screws. Make sure to use washers, screws, and glue to ensure a strong bond between the legs and the frame. Finally, sand any rough edges and apply a finish to the legs. This will help to protect the wood and make it look great.