Micheal, your explanations are absolutely superb. Thank you for taking the time and trouble to explain this to me and I hope it benefits other people as well.

I was wrong when I said earlier that my example was not the best. It was absolutely lousy.

The best way I can describe the effect I wanted is to dip your finger in water and draw the letter P on a shiny surface, ( I know, I would have to think of this now, wouldn't I?).

I meant what I said about your explanations, they are superb. I can see this forum turning into some kind of a MoI "WOW"
book if this keeps up.

Thanks again
Peter

P.S. At this stage Artcam is just slightly outside my budget, but I'm working on that.