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Robin,
The dome looks very neat - well done on tackling this design. Please keep the pictures coming. Do you happen to know its weight? I enjoyed reading your blog - brought back a few memories. Mine was built from 9 mm plywood (also 105 triangles) and is much heavier of course.
I'll be interested to see what you do to waterproof it; mine is just numerous coats of a thick waterproof paint. The geodesic shape is inherently strong, and once the dome's base ring was fixed in place, the whole thing stiffened up considerably. Of course, cutting the slot weakens it, but adding the frame in that aperture brings it back to a strong shape.
I might add a few dome construction pics to my thread later - just realised that I don't have any there.
Good luck with the rest of the project.
Chris
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