i have 2 large domes to build. is anybody interested in machineing the ribs for me on their cnc router? the small one is 11' in dia. with an eliptial cross section 3' high in the center. the other is called an ellipsoidand measures 19'x9'x5', so there will be some 10' plywood involved . if any of you people are interested and not too far from atlanta. call me at 770-368-1000