How to delete unused materials in Blender
Quick tips for Blender delete unused materials. Sometimes there are too many unused materials in the scene in Blender, we need to speed up our work process or to optimize the scene for minimizing the file size. We can delete unused material by few steps shown as below. This is the scene that we set previous for metal material setup, for this case study, now we are going to remove “Shiny Gold” Material in the second ring. Hope this helps. More Blender Tutorial, Tips and Tricks are available here.
How to delete unused materials in Blender
1. As screenshot, there is a shiny gold material in the second ring,

2. Go to Right Panel, Select “Blender File”,

3. Under Current File, Open the drop down menu of “Materials”,

4. Highlight the unused material that we want to delete, and right click, and select “delete”,

5. The Shiny Gold Material is deleted.

How to remove unused materials from object and from scene in Blender
In addition, here is a video to show how to remove unused materials from object and from scene in Blender. Watch on YouTube.
Hope this helps. More Blender Tutorial, Tips and Tricks are available here.
Continues Reading:
How to make a simple ring in Blender
How to Make Blender Metal Material Shader with Texture
Blender Jewelry – How to setup 3D Product Rendering for Diamond with Metal Ring
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from artist B