Ah, but I've saved different materials to each part of the towers (knew how to do this in Wings - just want to know how to do similar in Blender), so I have the towers set at cylindrical, and just got lost on the causeway settings. Here's the Screen grab of my bryce 4 materials lab - no cubic anywhere that I can see. I was wondering if any of the other options might do? I've tried most, without any luck so far, but you can pick more than one, so I wondered about combinations? Fran

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