This, along with your tutorials gave me lots of good ideas. Present issue is resolved. Thank you.

I'm now on the long road of learning Inventor. IMO, your tutorials are excellent ... they fit perfectly with my way of learning. Are there more? Have you done so, or do you plan to publish a book? If so, and it's written in the same style as your tutorials, I'm ready to buy.

FWIW: My most efficient way of learning and applying the capabilities of Inventor is to use very simple objects; 3D rectangular box, or a sphere. This allows me to focus on the tool, exploring its various options, and not be distracted by the intricacies of a project. It also promotes a more in-depth understanding of the tools. For example, the Autodesk "getting started tutorial" "creating a 3D bottle" gave very shallow treatmemt of the arc tool.