The Guess who entity posted thusly:

On Sun, 19 Feb 2006 22:50:30 -0600, Oleg Lego
wrote:

That's a slick little program. Gonna try making some paraboloids.

That will be difficult, since it's all 2D. I could point to some 3D
software, but you still won't get it to leap off the paper. Stick to
the 2D and rotate the finished template.

That was my plan... I only need a few templates to form a framework to
be filled. I was going to use the "hanging chain catenary" for it, but
this will be easier.