To test assemble the rudder skins, start with the spar along the front edge of one skin.
Then lay the shim along the trailing edge
Clamp the second skin to the spar. The block of wood is inside the rudder just to hold it open, so you can see how it goes together so far.
Finally, clamp the trailing edges together with the shim between them.
Drilling the rivet holes along the trailing edge, using a rivet spacer to get the rivets evenly spaced and looking nice.
The result, with a cleco in every other hole.
Repeat along the leading edge of the skin on the right side of the rudder. The hinge goes along this edge and you can see it in this photo (not yet trimmed to length).
The VS-10 rib taped approximately in position in the middle of the rudder.
I transferred the line along the top of the VS-10 rib to the outside of the skin.
The VS-10 rib fastened to the spar and the left side skin
I closed up the rudder (attached the right side skin) and drill through the skin and the rib using the line that I had previously drawn.
VS-15 rib in the top of the rudder. This was easier to position than the VS-10 middle rib since I could reach it and see it with the rudder skins assembled.
VS-9 rib in the bottom of the rudder. This was easier to position than the VS-10 middle rib since I could reach it and see it with the rudder skins assembled.
The finished rudder