On 13 May 2005 16:00:04 GMT, (Chuck Sherwood)
wrote:

My 11 year daughter is showing a strong interest in science.
We received a Edmunds catalog with lots of cool stuff in it.

I have always wanted to play with vacuum stuff when I was a kid
and I didn't get much of a chance so I figure now is my chance.

I figure it would be cool try to make a crude light bulb inside
a bell jar and things like that.

I looked at ebay and there are many vacuum pumps FA.

Do I need a two stage pump and how big of a pump do I need?
The killer is these things are heavy and shipping is expensive.

chuck

A Refrigerator Compressor Vacuum Pump

http://www.sas.org/E-Bulletin/2003-1...esAS/body.html



Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca