Arizona
Phoenix Area
Industrial Metal Supply: http://www.imsmetals.com (Great source for metal)
5150 S. 48th Street
Phoenix, AZ 85040
602-454-1500

Circuit Specialists: http://www.circuitspecialists.com (Great source for cheap local parts and soldering equiptment)
220 S Country Club Drive #2
Mesa, AZ 85210
800-528-1417

Regal Piedmont Plastics: http://www.regalpiedmontplastics.com (Acrylic, ABS)
4401 E. Baseline Rd
Phoenix, Arizona 85042
800-829-4770

California
Los Angeles Area
Industrial Metal Supply: http://www.imsmetals.com
8300 San Fernando Road
Sun Valley, CA 91352
818-729-3333

San Diego Area
Industrial Metal Supply: http://www.imsmetals.com
7550 Ronson Road
San Diego, CA 92111
858-277-8200

To submit additions to this list, send a PM to FKOSTYUN. Don't forget to add in the name, what they sell, address and phone number!