Maybe it is a bit old school, but I like to get pen and paper out and do a sort of technical drawing before I start making things. “Sort of” because I am not using 0.3mm and 0.5mm technical pens and following the strict methodology that I learned whilst at university, but for something like this sculpture I am using a drawing board, compasses, geotractors, rules and of course erasers. What I find is that the act of drawing helps me to understand the concept, or rather the limitations in my mathematical knowledge, so then I go back to the computer and draw it on there. After drawing it four times on the computer to obtain four different lots of results I got totally fed up and went back to pen and paper and just made some decisions like this angle will be 57.2° and started making stuff.
The first thing I did was to make the ring. I quickly decided to use steel square section instead of my original intention which was to use wire rope. Partly this was because I have the steel in stock, but mainly it was so that I could create a series of lines that would become reference points or datum lines. This enables me to orientate the ring and position the legs.
Now I know roughly where the legs will attach to the ring I can calculate roughly where they will meet at the top and start to make some visible progress.
With the top cone made I can now make the joints which connect the lower legs to the upper and ultimately connect to the ring.