07/05/14-08/05/14 - Layered textures hassles

I spent a little time unwrapping a few items in my scene only for maya to crash several times and losing a few materials i had been working on. Anyway I was playing around with the layered shader node for a while. I was making a few passes in photoshop to try and make the buttons look like paint has chipped away revealing metal phong shader underneath. I also used a bump map to make the paint chipping look a little 3D. It took a while to try and get it to work, but once it did I was really relieved and tried to do the same with the body of the radio.
With the body I added dirt and bump mapped dirt to make it look like that's a tool the scientist uses out in the field quite often.