this was a 2nd attempt, on the first attempt the camera stopped recording, due to the height the water cylinder was damaged from first drop, pay attention to the bottom of the cylinder, you can see the float rising before the frame is released, once the frame is released the buoyant motion ceases, i will continue with these tests and try to refine them
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https://www.youtube.com/watch?v=WcGF983tHC0