RE: PassTime Perigee Build thread
Yes, that is interesting. And, I can see how that diagonal grain could twist the wing.
Your cradle idea sounds like it will work fine. But, here's how I would do it:
For the LE I would use a piece of balsa about 2" wide x 3/16" thick, draw a centerline lengthwise on it and line up the centerlines of the ribs with that line. Do the same for the TE. Then, the wing will be suspended above the board on LE and TE which you can pin down. I call this the "lost jig" method because after you remove the wing from the board you saw off the extra pieces of the LE and TE.
Here's an old drawing I did a while back.
David