Yesterday we got the dome mostly built in my driveway, the only available spot in my yard that was big enough. It's on a fairly steep grade which makes the ladder about twice as scary. I won't be able to finish the top on the 8 foot ladder without someone holding it very steady and me on the top rung. It should be over 14 feet tall in the center when complete.
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This will be a 3v phase, 24ft diameter geodesic dome made of EMT conduit. Rather than use flat colors for the color coding scheme i decided to try patterns. I left one side (the outside) unpainted so that it will be silvery on the outside to reduce absorption of sun rays. We're going to cover the top with a huge sheet of aluminet and use a parachute covered with carpets for the flooring.
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I decided to try combining the steps of smashing the ends and bending the ends into one motion so that the beams have the bend structurally formed into them, rather than simply bending the flat tab at the end. The only disadvantage of doing it this way is that your hole drilling jig has to allow for the bar to angle downward away from the drill press, making it a bit more complicated to set up and adjust. But the way the ends came out really made it worthwhile. These hydraulic presses are backbreaking to use, it's like jacking a car up each time you want to smash the end of a tube - and I had 160 tubes to do. I was saved midway though it by replacing the press's hand pump bottle jack with a compressor driven jack.
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