Oval of Cassini

Jun 24, 2005 10 Replies

Hello All,



I'm trying to cut a sphere to give me two identicle surfaces (like a baseball). I know it's called an Ovel of Cassini, but what I need to do is figure out what it looks like from a side view so I can split the surface of the sphere.



Any help would be greatly appreciated.



TIA, Muggs


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is a good start. Search the site for "baseball" for more interesting stuff. Look also for "ying-yang" (?sp).

"Jeff Howard" wrote in news:dRYue.8725$hK3.778 @newsread3.news.pas.earthlink.net:

Look in Mike Wilson's examples.

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In the curve driven pattern examples, he has a good approximation of a baseball. Or were you aware of this, and need to create an exact model?

Thats where I saw it. Thanks Dale, I new I saw one somewhere.

Muggs

Paul,

That's very cool.

I'll say this much for ya. You have a real talent for finding simple, visual, solutions to complex geometry problems.

Regards

Mark

Interesting, you can substitute a parabola for the arc and still get a reasonable result.

The next trick is to do a flat pattern layout.

Paul Salvador wrote:

Paul,

Why the 4" dia dimension on the arc? I created a similar part that had that arc coradial to the profile of the ball and it worked. At least it seems to be the same geometry, I could be overlooking something.

devlin

Paul,

Why the 4" dia dimension on the arc? I created a similar part that had that arc coradial to the profile of the ball and it worked. At least it seems to be the same geometry, I could be overlooking something.

devlin

I've been away, but thanks to all who responded. Very interesting.

Muggs

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