Hexagon

The job I had planned for today was put off until tomorrow, so I did a blitz on cutting parts for the greenhouse. Even with ear protection on all day there is a slight hissing between the ears. I assembled one hexagon at the end of the day to try things out. When I measured the diameter across the three axes they were all within a gnats eyebrow of 1945 millimetres, and the joints are tolerably good.
Some of the vast collection of spear headed struts visible on the shelves behind in the photo above and my reams of notes on web page printouts on the stool in the one below.