Thanks for the swift reply. I will give that a go. I do A glass without layer (glass) and a conductor with one (dust) then use blend material to define the dust. I still think it would be nice to have the layer working as expected on the dielectric as it would be a simpler setup. It is also arguable that the ability to connect a layer to the Dialectic should be removed if it is not working as one would expect. 🙂 Unfortunately I can not add the images. Once again thanks for the help and keep up the good work.