Insert a Vertex Object into your document. In the Vertex Modeller, insert a grid (as shown in grey in pic 1). Using the link tool, link some of the vertices with diagonal lines so that each diamond encloses a grey vertex (as in pic 2). If you're using Carrara 2 you'll have to shift-select the vertices and then Ctrl+Shft+L. When you've done, make sure all your diagonal lines are selected (red) then choose Selection>Crease Edges>All as in pic 3. Your diagonals will turn yellow. Deselect them and they will turn blue. Now is probably a good time to curve the grid to the shape you want. Next, shift-select a row of the grey vertices (in the centers of the blue diamonds) then move them out slightly (pic 4). It's easiest to do this using a side view, choosing left or right so you can see a selected vertex. Repeat until all the grey vertices have been moved. That's it! HTH Mark