As shown in the diagram, information is taken from a CAD file in
.STL format.
The .STL file is an approximation of the model using a webbing of polygons. It is essential that
the interior and exterior boundaries be defined and that the model has no cavities. Some
rapid prototyping firms have recently added the capability to submit jobs over the internet by
uploading .STL files directly to their server.
Click here to get directions on how to prepare
your CAD file for rapid prototyping by making sure it is in .STL format.