I believe what you do is put the pins 22" apart (and level). Tie one
end of the string to one of the pins. Run the string over to the other
pin, and adjust the length until the hanging section is 8" deep. Tie up
the string at that point. The path that the string takes is a natural
hyperbolic, I believe.

On Wednesday, January 29, 2003, at 01:37  PM, John Rodgers wrote:

> I need your help.
>
> I need to draw a hyperbolic curve as a line drawing that will look like
> a bowl. It has specific dimensions of 22" wide by 8 " deep. The curve
> must be true for the dimensions. There is a way to do this with string,
> pins, pencil, straight edge and triangle, but I don't know how. Can
> anyone tell me how do do this???