This solution allows to distribute the pressing force upon all punches in a uniform manner to ensure the obtainment of the single caliber taking advantage of the concept of communicating vessels without using external pipes. The system can be applied on all types of molds, both traditional ones to Upper forming (Hydraulic ones).

The most obvious advantages are:

• The elimination of any problem derived from the use of pipes (breaches, drops losing etc.).
• Better manoeuvrability of lower punches (easier substitution).
• Easy to obtain a single caliber on big sizes (eg 60x60 3u.).
• Less stress on isostatic punches and consequent reduction of transparency effects on tile surfaces.