This format very often causes problem since some of the information in the file might disappear during import/export, so based on our recommendation, do not use this format if possible (rather use the file formats that are mention above). In 1996 the last version of the IGES format (v5.3) was released. When the STEP format was introduced in 1994 the IGES format more or less stopped to develop. File format extension: STEP or STP IGES: The IGES format was originally created in 1979 by a group of CAD vendors in the US. Depending on the settings and the modeling kernel of the CAD-system which it has been export from, it may lack some of the correct colors, assembly structure and object names. Another common protocol for the communication of solid model data is AP214 – Core data for automotive design processes. IRONCAD supports the Application Protocol 203 - Configuration controlled design (STEP AP203 level 6). File format extension: SAT STEP: An international standard for the communication of product data, also known as ISO 10303, released in 1994. This format can sometimes be unable to import/export colors and the assembly structure, depending on the settings and the modeling kernel of the CAD-system which it has been exported from.

File format extension: X_T ACIS: Is a 3D modeling kernel (or engine) owned by Spatial Corporation (formerly Spatial Technology), released in 1989. This format is most often the best when it comes to handle assembly structure, object names and color from different CAD-programs to IRONCAD. Parasolid: Parasolid is a 3D modeling kernel which was released in 1989 by ShapeData, now owned by Siemens PLM Software (former UGS Corp.). Using the Import Translator (additional cost)

Recommended 3D file formats for communication between common CAD-systems System

Ironcad import collection of polygons