Templates are then taken from the clay. I started with the smallest area rib so that template would be the first rough cut for the next template. The templates each get marked where they touch the constant lines and took about 20 minutes each.
The big box serves to take up as much space as possible. The box is square and very rigid. The box dimension is known and grid exactly the same as clay except for 3rd line. Rib #s and axle centerlines are marked on the box.
Each rib blank is cut and verified to be square (important). The rib blanks are measured and lined square at 12" , 18" up horizontal and 12" inward but vertical.
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