Laser Forming machine, making use of Material Increase theory, controlled by computer, form the prototype rapidly with a precision of +0.1mm by laser scanning on layers with an average thickness of 0.1mm and then add layer by layer ( liquid photosensitive resin will be melted quickly under the heating of UV laser ).

Rapid Prototyping is a degital manufacturing technology has been developed at the end of 1980s'. It disperse the three-demensions digital model of the parts, then process in the way of digital integrating. By using this technology, it is possible to transform CAD digital model to parts' physical form under the control of computers. Therefore, CAD--RP--estimating--CAD modifying has gradually been the new model to ensure a successful design with only one trial.