The primary goal of HARCO project is to achieve cost-effective structural solutions consisting of a new class of Smart Components (belonging to machine tools applications) based on plug-and-produce “Modular Adaptronic devices” which integrate smart and multifunctional actuators/sensors capable of performing a wide array of multiple functions, ranging from high and adaptable damping and stiffness characteristics to more demanding new requirements, such as active structural measurement and control function to achieve extremely high dynamic/thermal stability required in fast and precision machining. The approach followed by HARCO is the hierarchical combination of lower level units (named here “Functional Bricks” to generate higher level modules (named here “Adaptronic Modules”) which in turn are used and integrated into machine parts to generate the master component (named “Adaptive Smart Components”). Then the basic idea is to design and develop a sort of “fractal” and “hierarchical” elements (not only mechanical hardware but also controllers and software) that can be easily put together (plugged-in) to form/produce higher level modules/components (modules that build modules!) for active vibration control, thermal compensation and adaptive fixturing in precision machine tools applications.