Well, yes, I have Easy Site for Rhino that is the best tool in my box for this and it's great that I can switch back and forth between MoI and Rhino.

Thanks, Burr, for pointing out that with some changes to the contour lines (without compromising the model) I can use other MoI tools like 'sweep' ...

Rhino is a great tool but I can certainly speed up some processes by using MoI as a sidekick ... and that will be more convenient when layers are implemented.

thanks all,
eric