Altair HyperMesh®

In the Files menu, select the export and IGES toggles and set the following options:

• no planes
• outer loop mandatory
• groups

SDRC I-DEAS®

Under the File menu, select the Export sub-menu and select IGES.  Select the Surfaces to export as opposed to the Part.  Define a SolidMesh flavor with the following options (select Edit Flavor):

• Assemblies: Explode to a Single IGES Part
• Choose Geometry Types to Export: on

• Points: off
• Groups: on
• Curves/Edges: on
• Convert type to: 126 NURBS
• Convert Arcs to Conics: off
• Surfaces: on
• Convert trimmed surface type: 144:0 Trimmed with 3D Model and 2D Param Space Curves
• Convert to base surface type: 128:0 Non-Uniform Rational Bspline (NURBS)
• Trim curves convert to: 126:0 Non-Uniform Rational Bspline (NURBS)
• Solids: off
• Reference Geometry: off
• Maximum number of points per IGES Polyline: default
• Chordal Deviation Tolerance: default
• Maximum Degree of Curves and Surfaces: default

Autodesk Mechanical Desktop®

The default settings generally work very well.  However, in some cases, changing the default settings may be necessary.  Under the File menu, select the Export sub-menu and select IGES...  Select the Options button to bring up the IGESOUT Options dialog box.  Set the following options for each tab:

Geometry Tab

• 3D Solid/Mechanical Desktop Part Mapping: Surfaces
• Trimmed Surface Mapping: Trimmed Surface (144)
• DeskTop Augmented Line Mapping: Copious Data 3-tuples
• Map Point Entities: No
• Map Ray and XLINE objects to 110:1,2 (Unbounded Line Forms): No

• All off

• Create AutoCAD IPD's in IGES: No

• Map Layer Name: No Mapping
• Drawing Entity (404): Map Model Only
• View Mapping: All off
• Map XREFS: No Mapping
• Map Groups: Unordered (402:7)

• All off