1) overall dimensions for both wing boards is 9 7/16 "x 9 7/16 " and the set back on the rear of the wing board is a 1/4" on all four sides( like the set back on the back side of a lens board).
2) The opening on the main 5x7 wing board is 3 1/16" x 4 15/16" centered. The wings are made of aluminum & bent at 90 deg for attaching through the cut opening of the 5x7 wing board. The piece of aluminum should measure 2 13/16" x 4 15/16". On the 2 13/16" side (or long side) you'll want to make the 90 deg bend. You'll make the bend at 9/16", leaving 2 3/16" on the other side.Make a pair of these and the rest should be easy to figure out when you see the attached photos.
3)The opening on the main 8x10 wing board is 5 1/16" x 7 15/16" centered. The wings are made of aluminum & bent at 90 deg for attaching through the cut opening of the 8x10 wing board. the piece of aluminum should measure 2 1/4" x 7 15/16". On the 2 1/4" side (or long side) you'll want to make the 90 deg bend. You'll make the bend at 1/2",leaving 1 3/4" on the other side.Make a pair of these and the rest should be easy to figure out when you see the attached photos.
4)don't forget to add the half moon set backs on either side of each wing board. They are used as a place to attach the wing kit to the sliding carriage w/ the thumb tabs.
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