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Thanks for the encouragement guys.
Alex. Yes, the initial planning is frightening, but once you get started, winging on the fly reveals how much easier it can be.
It looks like small progress today but significant. After overthinking for hours I decided to go for 0.55 mm gal sheet covering instead of 3mm ply. On this test segment, It turns out its easier to work with, you can bend more. I nicked the edges folded them in level with the frame and screwed on. the edges look ugly, but ill cover the segment joins with wide flashing tape. Thick, sticky, waterproof and flexible, it will look fine and hide the nicks and screw heads.
Who ever dreamed up "measure twice cut once" obviously never built a dome. What if every-single-time you measure its different!!!. Spend all day measuring?, so silly.
Sometimes you have to use common sense, eyeball it and just get it done.
No measuring at all with the segment covers. Push gal against ribs, run round the inside against the ribs with a texta and start snipping, easier than I thought it would be, perfect!.
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