When working with SketchUp and V-Ray, you might encounter a scenario where you’ll want to purge your project from unnecessary/unused materials due to cluttering of your materials list.
To do that, you’ll have two options:
SketchUp’s Purge Unused and V-Ray’s Purge Unused Assets
Please note that we do not recommend the use of SketchUp’s Purge Unused function.
With the complexity of the structure of V-Ray Materials not being reflected properly into SketchUp’s Material Manager, using SketchUp’s Purge Unused option may not operate properly.
We only recommend the use of V-Ray’s Purge Unused Assets tool.