The system is designed as a rapid prototyping process by means of layers of the solid/solid type, consisting in decomposing by calculation the CAD model of the part into a set of elementary and simple layers called "strata" reinforced by the introduction of so-called inserts. The elementary layers are laid out and manufactured out of a material provided in sheet form using high-speed micro-milling or laser cutting.

The strata are then assembled using inserts to compose the final object. Assembly is taken into account when the object is being decomposed and contributes to the mechanical solidity of the parts.

The process is very fast and very well adapted to models, prototypes and also to tools. No restriction is imposed on internal or external shape, material type or size.

The differents of stages of part realization with stratoconception? process.

A file in STL format (made up of triangles) is generated on the basis of a 3D CAD model.

Rapid prototyping indicates a vast whole of techniques allowing rapid obtaining of material prototypes, at early stage of conception. Main rapid prototyping techniques allow, since numerical modelling (CAD), free-form fabrication in 3D by layers.

Rapid prototyping requires realization of four basic conditions :

• to allow rapid obtaining complex forms in 3D
• using CAD modelling since initial conception stage
• an uninterrupted numerical chain
• using layers manufacturing process