The styrene I see at my local model shop is from Evergreen Hobbies. They have sheets, tubing, all kinds of structural shapes. They have a 1/16" angle that looks about right. That's what I'm going to try. I found some stuff from Sig that are corrugated sheets of styrene; 2 problems that I see with it, though: it's really thin(flimsy), and the corrugations aren't spaced closely enough.

I plan on skinning the ailerons with 1/64 ply, cutting the 1/16 angle and applying it a piece at a time with thin Ca, then coating it with finishing resin to fill the edges where the angle meets the skin, to make it look like one piece of aluminum with the corrugations made into it. I will also use 1/64 ply to make all the tank covers as well as the aluminum skin on the forward fuse and at the interface of the vertical tail and fuse. I am also considering attaching the horizontal tail as the prototype, at the forward end where the trim assembly is, and at the elevator pivot. The tail braces will make sure nothing shifts around, and will support the structure as well. If I get froggy enough, I may even make a scale tailplane trim mechanism, using a ground adjustable screw; I saw one of these made for a 1/4 scale Cub once. I'd also like to make the elevator mechanism hidden, like the WACO Classic is. Most of this will depend on what the structure looks like when I get the covering off (this is the Cox/Pica WACO I'm talking about).

My LHS said mine was on its way, should have it in a week or so, I'm in no real hurry (yeah, right). I got my dummy radial today, from Aerotec. Preliminary opinion is mixed--the cylinders look thin compared to the Jacobs pics I have, and it needs the wiring loom and spark plug leads, plus the front of the engine case is too big; what the hey, it's either a P&W or a Wright anyway. I may use it anyway. I'll post a pic of it assembled dry in a little while.

Oh, while I'm at it, a pic of me with my other love, Cubs