Rob,
No problem...it's good exercise, and it's not the work I should be doing....
I used XTrkCad. It's a free program. I've attached the .xtc file (zipped), so if you download XTrkCad, you can play with it, and if you want, print it 1:1 (or any size you like).
I know what you mean -- it's easy to get distracted from the "real" work!:mrgreen:
Just downloading that app now. I'll see how it works!
Cheers, Rob