ORIGINAL: planebuilder66

perpendicular to the spar, grain going vertical from the wing panel being level, the issue your talking about is do the shear webs go vertical in conjunction with the diheadral, not really, just build the wing 1/2 on the board and put the grain vertically to the sparbeing horizontal. you'll be fine, does it really matter, no but it's standard building practice to make them exactly parallel to the ribs.