Thanks again John,
It seems like you are leading me to use Fusion 360. My earlier exploration thereof very challenging. I just might give it a whirl again.

Claude
Claude S Poliakoff, MD FACS retired
OHSU We-Can Patient Support Group Lead
Mobile tel: 503-849-3610
http://www.ohsu.edu/xd/health/services/cancer/getting-treatment/services/esophageal-cancer/about-eso...