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BLBlender

Export Iges

by Digital Sculptors·Workflow

Images © Digital Sculptors. Used for product review; image policy.

Why we like it

Export Iges fills a narrow but real gap in the Blender library: getting subdivision limit surfaces out to CAD as IGES rather than as mesh formats. Worth keeping the add-on's own guidance in mind, since it targets quad-dominant surfaces, not dense triangulated meshes, where STL is the better route.

What is Export Iges?

Export Iges brings a specific workflow to Blender: it converts subdivision limit surfaces into IGES files that CAD systems can read. Built by Digital Sculptors, the add-on works on a mesh's limit surface, so it targets sparse, quad-dominant models rather than dense or triangulated geometry.

Once installed, exporting runs through File > Export > Export IGES. You select the objects you want, then set options including export selected only, a subdivision level of 1 to 4 (default 3), Keep Corners for sharp boundary edge corners, Up axis, Forward axis and Apply Modifiers. Batch Mode saves each object as its own IGES file using a name_objectname.igs pattern, which the developer suggests for keeping objects manageable in CAD.

The add-on expects a single subdivision modifier placed last in the stack; multiple subdiv modifiers, or one out of order, can produce output that doesn't match the shape. It runs on Windows, macOS and Linux, supports a long range of Blender versions from 2.83 through 4.3, and is released under the GPL license.

Who is Export Iges best for?

Export Iges is best for moving sparse, quad-dominant Blender models into CAD systems as IGES limit surfaces.

How much does Export Iges cost?

Export Iges is completely free to download and use.

Key features

  • Exports subdivision limit surfaces from Blender as IGES files for CAD systems
  • Subdivision level selectable from 1 to 4, with a default of 3
  • Batch Mode saves each object as an individual IGES file named name_objectname.igs
  • Keep Corners option keeps boundary edge corners sharp, or smooths them when switched off
  • Export selected only, plus Up axis, Forward axis and Apply Modifiers options
  • Cross-platform builds for Windows, macOS and Linux

Tags

#Blender#IGES export#CAD#subdivision surface#limit surface#add-on#workflow

Frequently asked questions

Which Blender versions does Export Iges support?

Export Iges lists compatibility with a wide range of releases, spanning Blender 2.83 through 4.3, including 4.2, 4.1, 4.0 and the 3.x series. Installation differs by version: on Blender 4.2 and newer you drag and drop the zip file directly into Blender, while on Blender 4.1 and older you open Edit > Preferences > Install, choose the downloaded ZIP file, and enable the add-on. In both cases, do not unzip the file before installing it.

What are the system requirements for Export Iges?

Export Iges runs on Windows, macOS and Linux. On Windows it needs Windows 10 64-bit with the VC++ runtime 2017 or above. On macOS it requires OS X 10.13 for Intel CPUs, or macOS 11 for ARM CPUs, or higher. The Linux build is 64-bit and depends on several system libraries, including libstdc++.so.6, libm.so.6, libgcc_s.so.1 and libc.so.6. It's worth checking that these libraries are present before enabling the add-on.

Can Export Iges handle dense triangulated meshes?

Export Iges is meant to export the limit surfaces of a sparse, quad-dominant mesh, not dense or triangulated geometry. For those meshes, the developer recommends a suitable format such as STL instead. The add-on also expects a single subdivision modifier that sits last in the modifier stack; with multiple subdiv modifiers, or one that isn't last, the output might not match the shape, so you'd apply those modifiers manually first. Tangency near odd-valence vertices may also be limited at low refinement levels.

Is Export Iges free, and how is it licensed?

Export Iges is listed as free here in the catalog, and it's released under the GPL license. Licensing and any current pricing can change, so for the latest terms it's best to check the developer's page from Digital Sculptors. The add-on is also marked as Blender Extension compatible. When you're ready to use it, you export by selecting your objects and choosing File > Export > Export IGES, with batch export recommended for keeping objects manageable in CAD systems.

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