So to make the roof of a yurt work, you need a compression ring in the middle, and a tension ring on the outside.
I made the inner compression ring first. I had a 36" long piece of 1/4" thick steel on hand. I knew I was going to skip a rafter over the door, so I would have 13 rafters. I did a little guessing and checking, and found 2.5" between rafters would be about correct.
I marked it out...
I figured trying to bend 1" of steel would be a little difficult, and cutting an inch deep wasn't going to happen with my old angle grinder wheel. It had to be replaced.... I seem to go through angle grinder wheels roughly every six months.
I'd have pictures of the outer ring.. but making that was really dull. I drug the wire out on the sidewalk, measured it with a tape measure, and put the cable clamps on it. You'll see it in the next post.