Producing the elements required to build this airy structures meant that I had to some repetitive activities with a specific target in mind: precision. I noticed that especially the flexibility of the tension elements provides some leeway for the measurements, having quite uniform elements simply eases construction.
With a closer look you can see rubber band along the compression elements, I used those to prevent the nylon string from slipping out of the grooves. The model was quite sturdy yet bouncy, and I decided to take the 'safety rubber' off. At some point my ambitions backfired, and sphere flattened into a sheet. Bummer.
The construction of the sphere was quite straight forward, but I realised that not all the grooves were narrow enough to hold the string in place, I delayed the next construction attempt until better tools arrived.
It took only a week until a set of diamond blades arrived, and instead of using 6mm wooden dowels I took some large bamboo skewers. Again, I had to manufacture more than 30 identical elements to build my sphere, this time using transparent elastic string as tension element.
It took two or three attempts, and a bowl to provide some initial curvature to build this model, and this time it remained stable after removing any rubber band used to prevent slipping. It even survived inserting a balloon on the inside, to provide some more photographic attraction.
The balloon decided its fate. I build a small tensegrity base for the sphere, and took some photos on the outside, utilizing sunlight.
Slight gusts were sufficient to get the sphere rolling off its base, and I when placed the sculpure in front of the next backdrop a gust dropped it to the pavement, where it collapsed. Well, I got it together once, and I already have the next idea how to tackle my string slipping out of groove problem can be handled. At least, I got into the habit of taking photos of the finishing stages of my tensegrity before I do further experiments or 'improvements' with them.
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