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Originally Posted by multiweb
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Actually, that part wasn't so hard. I Drew the dome in fusion360 (free version, any CAD software will do, like sketch up), captured jpegs of different views along with the background grid to give scale, printed them at A3 size, measured each item with a ruler, multiplied by the grid scale and got the height of each rib. The diameter curve of each rib is the same so I only needed the height and angle of the end cut for each rib. string and pencil on the ply sheet for diameter and cut to height/end angle. Printing scale is almost random, so the printed background grid made that irrelevant. If anyone wants the original captures, your wellcome, can be scaled to any size with the aid of the background grid on each pic.