A few days ago I started to make something to hold the top of the water tank cover together and yesterday was dry enough to let me get out and finish it off. The thing is starting to get heavy so it needed to incorporate a lifting eye to one day suspend it from the FEL to lower it into place. After sketching different ideas I settled on a square plate to which are attached 8 short steel bars, each angled so they could be welded into the V of the angle iron. A piece of wood made a good trial and error (with lots of errors!) template.
It was easiest to position the first bars across the diagonal and then cut out where the hole is once they had been tacked into place.
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In retrospect I should have made this top piece before anything else and used it to align all the ribs instead of balancing them on an empty paint can, which meant nothing was firm until all 8 pieces were tacked into place. I hadn't anticipated quite how difficult it would be for a novice fabricator like me to get all 8 sides equal, or how tight it would be to poke in a welding rod to some of the welds on the underside.
We live and learn - I have just about learnt enough to make this my last octagonal structure :laughing:
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