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The aileron nose ribs are wrapped with plywood, a 3″ PVC pipe is the perfect outer diameter of 3.5″ to help prebend the plywood.
Using the same 3″ PVC pipe I cut some clamps by cutting off about 1″ of pipe then cutting a slit in it.
After soaking the RS-512 plywood in warm water I wrapped it around the pipe and held it in place with the clamps.
To ensure the plywood is straight I used the writing on the pipe as a straight edge.
After sitting overnight it looks great.
Now I just need to make five more to have enough for both wings.