Robert,
The most common aluminum is 6061-T6. I have found Metal Supermarkets is a
good choice for metal (aluminum and steel)
http://www.metalsupermarkets.com/msc-metalguide.aspx?ProductID=8 They have
locations in several city's around the US and world. I'm lucky and live only
5 miles from the Redwood City CA location. I can e-mail in a quote and get
response in an hour or so, and have material ready to pick up in an hour.
Best way to communicate is to send e-mail directly to local facility rather
than going through corporate mail server.
Good luck,
Gary Lindgren
Palo Alto




-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of Robert O. Green
Sent: Tuesday, February 03, 2009 7:56 PM
To: PSN-L@..............
Subject: 8020 aluminum and approaches to constructing a homemade seismometer

I have come across a source for cut-to-order 8020 aluminum and brackets.

http://www.automation4less.com/store/products.asp?cat=1097

Has anyone tried this approach for homemade seismometers?  There seems 
to be good potential.

Are there examples of 8020 seismometers?

Are there other good sources for 8020?

Robert



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