An additional modular system has been developed to guarantee that the customer can utilize its Tricept in an optimum way maintaining the flexibility and work envelope without sacrificing the stiffness, accuracy and acceleration that come from the Tricept technology. This system is designed around two side walls and one upper bridge, all consisting of thin sheet metal boxes filled with an special epoxy polymer concrete. The above described epoxy polymer concrete, is successfully used in other applications by well known machine tool manufacturers in the world since years back. The side walls are equipped with a complex pattern of holes that allows the Integrator or OEM customer to put the upper bridge in three (3) different positions, 45, 0 and 90 degrees.