The cheek plates were made from black locust glued to the rudder with G2 epoxy and then riveted with 3/8" copper rivets and bronze roves. The rudder was sealed with a mixture of Epifanes varnish thinned heavily with turpentine with a splash of creosote in for good measure.
The tiller socket was lined with 3/32" bronze plate bedded in.
The pintles were riveted with bronze carriage bolts which I annealed with a torch before installing. You can see the bronze exhaust outlet with rubber flapper in the picture.