On 18 Feb 2006 06:59:47 -0800, wrote:

I'm making a wine rack:

http://www.uniqueprojects.com/projec...k/winerack.htm

and I was wondering how to lay out that sine curve on the piece of wood
to cut it.

For future reference, if you want a real sine curve, and not an
approximation [within the bounds of the tools and shaky hands] use a
math program like Graphmatica, then copy/paste into a word processor
or image editor for printing to the scale you want/need.

Graphmatica is shareware, but free for those who can't afford it [so
just use it if you can't.] PhotoFiltre , or "The Gimp" are freeware
image editors. OpenOffice is a great free office suite with a
wordprocessor and spreadsheet and much more.

If you do it intelligently, you can do it to suit your project scale.
One hint: in Graphmatica type in y = sin(x) for the unit sine curve,
and you might want to change the default colours to black and white.
You can change the equation if you want varied results; something like
y = 3sin(x) or y = sin(3x) or whatever. You likely don't need that
though.

Or, any basic trig text shows how to draw it from the unit circle.