http://www.woodiesaircraftfactory.co.uk> Rudder
Construction of the Rudder.
The Rudder spar, spar caps, rudder horn and rudder hinges and brackets were all clecoed together and temporarily mounted on the vertical stabiliser to work out which combination of AN-960 thick washers, and AN-960L thin washers were required to ensure there was no slop in the hinges. Turned out to be one of each on both side, for top hinge and bottom hinge. The bottom bracket was held on temporarily by ordinary diy metric nuts and bolts because they were a lot easier to do up and undo than the self locking aviation types to be used in the final assembly.