# how can I make a hyperbolic paraboloid surface in PTC Creo 3.0?

how can I make a hyperbolic paraboloid surface in PTC Creo 3.0? Could you answer it step by step?

### 1 Answer

I've never used Creo, but maybe this will give you some ideas.

The easiest option is looking to see if a sketch tool for conic sections exists.

Option two is a little more involved, but the surface you've described sounds like a conic section. What if you drew a cone, then created a section through it. You'd now have the desired sketch by simply converting the edges of the sectioned cone into sketch geometry.

A third option would be to generate the required curve by passing a spline through points. Does Creo support equations? If not, I'm sure there would be a way to plot the curve in a program like Excel. It could then be used to export the X.Y coordinates for the sketch points.

Anyway, it seems possible: https://en.wikipedia.org/wiki/Conic_section