The arms require stock that is 10/4 or 2 1/2″ thick in order to create the deep sweep shaping. Only having 8/4 lumber, I needed to re-saw and glue up the appropriate thickness stock. Once milled, the layout and cutting were simply done on the band saw. A corresponding dowel hole was drilled to create the joint between the front leg and arm. The back leg connection is a glue/screw joint.