Have you tried a noise node? Also, remember that you can insert a Color_Math node between the displacement node and channel to set your zero displacement value to something other than black. Example - set the Color_math Value 2 to RGB 128/128/128 (medium gray), and anything lighter will displace outwards, anything darker will displace inwards. Plug your noise displacement into the Color_Math, then plug the C_M into the disp channel. Since a noise node gives very mixed tone values, the Color_math node can change it dramatically. mac