What is a “Model” Interface? Model Interfaces enable VERICUT to read the designated model file formats and use them as stock, fixture, design, tool holder and machine models. When combined with Model Export, VERICUT’s cut stock may be written out in these formats as well. The modules do not require a CAD/CAM system be available for VERICUT to read or write any of the formats. VERICUT includes the ability to use several industry-standard model file formats: STL, IGES, VDA-FS, and DXF. Additionally, the following optional model interface modules allow VERICUT to use formats: STEP, ACIS, CATIA V4, and CATIA V5. Also, NX .prt part files can be opened directly in VERICUT.