Creating Man-made Materials in Cycles - Blender 2.6 Cycles: Materials and Textures - page 116

Creating an expanded polystyrene

material

In this recipe, we will create the classic white expanded polystyrene material:

Getting ready

Start Blender and load the file 1301OS_04_start.blend .

How to do it...

Now we are going to create the material:

1. Select Suzanne (or whatever mesh you are going to use) and click on New
in the Material window under the Properties panel or in the Node Editor
header. Rename the material Plastic_expanded_polystyrene .
2. Switch the Diffuse shader with a Mix Shader node. In the first Shader slot
select a Diffuse BSDF shader, in the second Shader slot select a Glossy
BSDF .
3. Set the Diffuse shader Color and the Glossy shader Color to pure white;
set the Roughness value of the Glossy shader to 0.600 . Add a Fresnel
node (press Shift + A and then go to Input | Fresnel ) and connect its out-
put to the Fac input socket of the Mix Shader node; set the IOR value to
1.550 .
4. Add a Voronoi Texture node (press Shift + A and go to Texture | Voronoi
Texture ), then add a Texture Coordinate node (press Shift + A and go to
Input | Texture Coordinate ) and a Mapping node (press Shift + A and go
to Vector | Mapping ).