Rendering the cannon

The cannon needed to have a realistic dark stone material, being held upon a wooden structure.

By studying the image I could see what it should be made of so I could search for a good textured material to render it with.

The image shows the cannon with age and with certain damaged wood. I did not want this as the model is supposed to be set to be used at any time. This means I had to use a healthy looking wood but which also had age to to it. These are the material I used for the cannon:

I used the bump/gloss/specular levels like the same as the siege machine. This gave the final look.