I really like Material Maker!
I have a few questions.
- Is there a way to restart the rotation of the material preview?
- In the documentation see a Blur node listed, but where is it?
- How does the Custom Shader work?
1. Not in this release. But there will be a button for this in 0.7.
2. It was removed in 0.6 (due to major refactoring) and will be back in 0.7.
3. This really needs documentation (not only about how to write custom shaders, but also about how Material Maker works with shaders) and I'll write this soon. Anyway, many nodes are implemented as shaders, so you can select one, hit Ctrl-F and use the pencil button to see how it is implemented.