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While searching for diy info on vacuum pumps, I came across this  
really interesting site.  Thought it would be of particular interest  
to those of you who do classes/birthday parties, etc...Perhaps  
someone on the list knows the author and can share more info.

What struck me most while sampling the projects is that they are so  
simple and require very little in the way of materials...

Enjoy!

http://scitoys.com/

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