The ZPrinter system uses a composite powder and binder delivered through a standard print head system to build its models, this provides low costs per project and is intrinsically strong as soon as the model is finished. Projects can be painted to add authenticity. Maximum size of model 25 cm x 20 cm x 20 cm Guideline price £15,995 including enough materials for 500 mp3 style projects. If you are considering purchasing a RP system please click here for further information. No larger than a photocopier, modern rapid prototyping machines are as simple to run as a desktop printer. There are several different methods of producing rapid prototype models but they all begin with a 3D CAD model of the component part. The part, or assembled parts are saved in STL format for transfer to the rapid prototyping system. STL files use triangles or facets to define the parts features. Each facet is defined by the position of its three corners in space, and its direction, which distinguishes between the internal and external surfaces. Each facet has to be connected to three others at its edges, so that the total volume of the model is enclosed. The illustration shows how STL defines a simple cone. Although the base of the cone is circular, the STL file will show it as a series of small steps. |