Hi Michael T,

Thanks for the offer.
Here's that OBJ file out of 3D-Coat.
It's nothing overly fancy, just something that I was trying out to see if the process would work.

Sadly my use of ZSurf4 is still rather limited due to my lack of fully understanding all of it's Sliders & Settings.
I'm pretty much just using the Default settings & go from there into MoI.
I really do need to find out more on how to use it better & to it's full potential.

regards Colin

Here's a screen capture of what the OBJ looks like in Rhino.