Rudder assembly 4

Sanded the areas around the control horns. Glued a small piece of plywood inside the shear web to close the original opening for the hinge (recall, I repositioned the hinge down by ~25mm).
I have ordered but have not received yet the red tint for varnish (as recommended by Igor Spacek), but I happened to have some graphite powder. So I used a pinch of graphite powder to color a small amount of water based varnish that I had on hand. Varnished the interior of the first skin and the spar.
Cut out the second skin. Marked and drew outlines of all elements on the skin. Masked off the future bonding areas. Varnished the second skin. A minor concern - the skin bowed out since one side was moist from the varnish. Maybe because I diluted the varnish slightly with water. Once the varnish dried off a little, I lightly sprayed the opposite side of the plywood, and loaded the skin with books to keep it straight. Hopefully this will help. I did not notice the bowing out as much on the first skin, but probably only because it is attached to the skeleton.
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