Hi Will, I think I'll be doing the docs in HTML and then also convert them into a PDF version that can be used for printing.

> I guess I'm asking, what are the limitations? Does both curves have to be the
> same size, or "cover" each other in space?

Just the curves should be planar, and the extrusions of the curve should intersect each other.

I'm not sure what might have gone wrong with your first attempt... Next time save off the curves and send them over and that will help!

- Michael