I'm building a 4*40 kit, (my third kit project) and I am concerned about warp-age in the fuselage sides.

I have rubber-banded the fuselage sides and formers together but have not yet applied any glue. Both sides have a distinct warp to one side at the tail end, (maybe 5/16" to 3/8" inch). The warp starts just behind the next to last former. Should I just be very careful to hold things tight when applying the glue? Or is there a trick I can use to try to get the sides to straighten out in the relaxed state?

Any advice here is appreciated.

Fever

First tack the bottom of the fuse to your work bench/building board to keep it flat. glue the joints at the rear of the wing making sure they are straight, then, work your way back one former at a time making sure easch one is straight. Once they are all glued, they will hold their shape. It is not necessary that they are straight in their relaxed state. Die-cutting will creat stresses on the wood that will cause those warps you are experiencing, the formers are what will straighten them out.

Well I tried as best I could to hold the side straight while gluing, but they still look crooked.

These are lite-ply, (laser cut) and they both were warped in the same direction so it was tough to pin them down with absolutely no curve.

The bend is not as pronounced as it was before gluing, but it is still noticeable. Maybe a little less than 3/16" mostly form the last former back to the tip of tail.

Will this fly? Will it only need a little opposite rudder trim and forget about it, or is there something else I can do to lessen the problem before I finish out the assembly?

Thanks,

Fever

P.S. If I could figure out how to create a digital photo of the proper file size, I would attach a pic...