Eccentrico rather strangely (given its name) finds itself at the focal point of Mangiarotti’s research into gravity joints and his explorations on the theme of inclined bodies. In this project, weight, geometry and material coexist in an explicitly delicate balance. Eccentrico unashamedly exposes its inner workings yet manages to keep an aura of magic. 
The elliptical table-top is asymmetrically embedded into an inclined cylindrical leg blocking any vertical sliding by means of friction given by its eccentricity, using its own weight to push down and fully close an otherwise open joint.
The Eccentrico table became a real structural landmark, making Angelo Mangiarotti one of the great furniture “builders” of the 20th century.
Tavolozzo (not in production) is another notable  example of this line of thinking. This time the top is made of glass. The particular geometric conformation of the eyelet requires incredibly precise manufacturing processes that push craftsmanship and the materials themselves to their very limits. 
Vera Laica is another project worth mentioning. In this case the human element (the wearer) becomes a fundamental component of the joint itself. The mere act of wearing the ring ensures that the two pieces it is composed of, will stay together.