Starting from the .STL file, the AutoGen software automatically performs four functions on the file to prepare the part for building:

1. Automatic file verification and common problem resolution.
2. Part positioning.
3. File slicing.
4. Support generation.

Scaling the model can be done in two different ways: either by choosing a percentage of the file size, or by "fitting" thepart within a pre-determined volume up to 8 x 8 x 8 cubic inches.

The part is sent to a print queue for building. An unlimited number of workstations may send parts to the queue, enabling multi-user access.

The actual model is then built:

1. The polyester compound is supplied by a series of cassettes. Each cassette holds 50 rectangular wafers.
2. The wafer are fed, by a stapling mechanism, into a pressurized, heated channel that supplies the material to a viscosity pump.
3. The material is extruded through a 0.013 inch diameter orifice at a controlled rate.
4. The part is build on a thermally controlled metallic substrate that rests on a table.

Fewer supports are required due to precise pump control and a "bridging" technique that allows the material to be extruded across a distance without supports. In general, the supports are built from the same polyester material.

Information is taken from Stratasys Inc.