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Getting somewhere now.
After a day visiting the Lume and lunch with the family I only had time to fix the 60-degree ribs into place and flesh out the final 30-degrees Ribs.
Same process as for the 90-degree ribs. Remeasure, drill, glue and screw the top of the 60-degree rib to the shutter frame and then remeasure, glue and nail the bottom of the 60-degree rib to the dome base ring. Job done.
Also fleshed out the last of the ribs, that being the 30-degree ribs. So, tomorrows job is assembling two pair of 30-degree ribs and hopefully have them fixed in place by the afternoon.
By the way, three sheets of 2400x1200x12mm plywood nearly made the distance had I not made some erroneous cuts on the second sheet while constructing the shutter frame. The piece of plywood that were intended for the shutter frame are now being repurposed as plywood brackets as seen in the pictures.
So, will need to buy roughly a 1200x1200x12mm plywood sheet to construct the ring that will be used to support the rollers and sit on the observatory wall structure. Will worry about that later.
Cheers
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