this is a wire  tree that I am building and mentioned on RCM 
made out of 3/32 mig wire that was rolled this homemade roller

http://www.metalworking.com/dropbox/ring_roller_001.jpg
http://www.metalworking.com/dropbox/ring_roller_002.jpg
http://www.metalworking.com/dropbox/ring_roller_003.jpg
http://www.metalworking.com/dropbox/ring_roller_004.jpg
http://www.metalworking.com/dropbox/ring_roller_005.jpg 

B