Hi James,
thanks for the new file works great and with the ability to switch Iso 'u-v' it's a bonus.
It greatly reduces the time to use Zarkow's method of smoothing transitions between
connected surfaces by Sub D.
I have already started a thread on it so will post the process using the nodeeditor
and your nod file.
Hopefully it will show advantages of using the nodeeditor.
Many thanks
Barry