Time for action – simulating the glow of a kiln

Cycles offers a lot of ways to use light. Here, you are going to simulate the glow of a kiln as a white sphere acts as a light source and bounces light off red faces, turning the light that bounces to red light. First, you'll build the kiln:

1. Open a new file in Blender.
2. In the center of the top header, click the LMB over the button that says Blender Render, and choose Cycles Render from the drop-down menu, as shown in the following screenshot:
   
3. Select the default lamp with the RMB. Press X to delete it.
4. Select the cube with the RMB and press the Tab key to get into Edit Mode.
5. In the 3D View header, click on the Viewport Shading menu button and choose Wireframe.
6. In the 3D View header, click on the Face select mode button.
7. Choose the face nearest to the camera.
8. Press E to extrude it, and then press Enter.
9. Press S, 0.5, and Enter.
10. Press E, -1.7, and Enter.
11. Press A to deselect all the faces.

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This was pretty easy. You took the...