How do you cut a mortise and tenon joint?

To cut a mortise and tenon joint, first, mark the location of the joint on both pieces of wood. Use a chisel and mallet to carefully remove the material for the mortise, making sure it is the same size as the tenon. Next, shape the tenon on the end of one piece of wood to fit snugly into the mortise. Test the fit and make any necessary adjustments before gluing the joint together.