Iray+ Material Library Converter
Iray for 3ds Max includes a utility for converting the units used in specific material libraries. The plugin uses
1 meter units for all materials and maps. If your workflow uses different scales then you will need to convert our
libraries and any libraries you have created to this.
✱ Note: the converter will always convert to your currently set system units.
These can be accessed from the 3ds Max menu bar under Customize > Units Setup > System Unit Setup.
Using the Iray+ Library Converter
The Iray+ Library Converter is accessible via the Utilities tab on the Tool panel:

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Iray+ Library Converter
- To enable the Iray+ Library Converter, from the Tool panel under Utilities > More…, select
Iray+ Library Converter.
- Click Select Material Libraries… and navigate to your material libraries (.mat) in the file system.
- Select one or more libraries and open them:
- Set the unit scale used when the material library was saved; for Iray-supplied material libraries the default will be
1 meter.
- Click Convert to system units to convert to your currently set system units.
The converter will create a new material library for each library selected. These will be saved in the same location as
the original. The new material libraries will have a suffix indicating the current system units, i.e. examplelibary_in.mat for inches.
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See Also:
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