Hi again, I found the pieces of the wing spar that I cut off to make the 58" wing, and the left over pieces measure: 1 11/32" tall, 1/4" thick and the length depends on if you are going to make the 64" or the 58" wing, with the two spar halves butted together. Not sure of what type of wood, but it is light. Do you have the dihedral braces? Also, the end of the spars are cut to make the proper angle of the wing tip when folded up on final wing assembly. Not sure of the angle. Hope this helps.

Richard