Sorry about the incorrect last one, that was just a square bumps thing, 
here's a real knurl.
Once again, the shape of the 'cylinder' itself is defined, then the 
spacing of the peaks (this time different for vertical and horizontal, 
to allow for non-45degree angles of knurling). Tops of peaks can be 
flattened off, and the valleys can be chopped too (though that isn't 
possible when doing this on a lathe).

As before, it is an optimized mesh2 with the minimum possible number of 
vertexes and triangles, and if anyone wants it I can post the macro.

cshake

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