> Okay, I have figured out how to extract a curve: select the underlying curve and copy.

Yup, that's the basic extract technique.

Another way to make a quick duplicate is to select the edge and then hold down control and drag off a copy of it. But Copy + Paste can be good since it completely preserves the location of the object.


> Anyway, this is my preliminary sketch of my moise. ;-)

It's looking pretty nice!


> I hope you'll welcome more suggestions. I've got plenty.

Certainly! That's how things improve! :) Of course some things may take a while before they can be implemented...

- Michael