With "Floating Bowls" I have designed two more models on the subject "Tensegrity". There are 2 different bowls and 2 different middle parts. You can arrange it as you like!
Some impressions: https://youtu.be/34EizXDBGTA
Dimensions: bowls Ø135mm, base Ø 80mm, height 130-145mm
As tensioning string I took a nylon string Ø 0.35mm. Thread or dental floss will also do the job!
Start to insert the middle parts into the bowl and the socket ... into the holes provided. The arrows at the bottom are there to align the middle parts correctly. You should place them as shown in the 7th picture! To ensure a good fit, the fitting accuracy is very tight. It may be necessary to correct the fit with a cutter knife or sandpaper. Then apply superglue. For a correct alignment you should use a stop angle!
Then insert a string - with a multiple knot at one end - into the holes the middle parts. The distance there in the string area should be about 20 - max. 25mm. Make a larger knot at the other end.
When the middle parts are glued tightly, you can start with the more difficult part. You need 3 threads of about 25-30cm. At the bottom off the bowl you see 3 little holes. Take one thread and make a multiple knot at one end and then pull the thread through one hole of the bowl. Place the bowl with the bottom side facing up. Then feed the thread through a hole in the socket. Pay attention to the alignment of the middle parts. At first just clamp the string. If the notch is not clean, try to open it with a cutter knife.
Do the same with the other 2 strings. Now you can start with the adjustment. Do not tighten the threads too much, otherwise the middle parts could deform. So when the strings are slightly tightened, socket and bowl are aligned horizontally, then you can secure the strings. Hurray! That's it! … the bowl is floating!