re:Re: Any exciting on topic Christmas presents?

Bob wrote:

>My wife bought me the second edition of "Mechanisms and Mechanical
>Devices Sourcebook" by Chironis & Sclater.
>Neat book! I have always wanted to build something that uses a
>"Geneva Movement". Lots of gears, cams, and monkey motion. A great
>mind exercise just to figure out how some of these gadgets work.

Bob,

Geneva mechanisms are often used to index the turret of tools on a
machining center toolchanger. Just thought I'd give you a place to
put your desire to good use...

And of course, the typical use is advancing the film in commercial
motion picture projectors.

Hope this helps.

Ballendo