Thanks for coming back to me..
I like the idea of grabbing things and copying sideways. If I did this at each step and saved, I wouldn't have so many files in the project folder, as back up in case of crashes.. and it does just crash my end, when applying the quadmesh procedure.
As I mentioned earlier, if I can get isocontours from a points cloud, export these to and mark up in CAD, I am still ahead of the game...
Ta