I have built several 6, 2, and 543 yagis using 3/16" diameter aluminum rod
(6061) and bought it off Ebay from:

http://cgi.ebay.com/3-16-ROUND-ALUMI...QQcmdZViewItem

The stuff works great and I "Weld" the elements in using Aluminum "welding"
rod, also found on Ebay. Just be sure to follow instructions about cleaning
the metal prior to trying to "weld" it. I use a Mapp gas torch but propane
will work, it just takes a little longer to heat up the metal.

73,
Ken

"Leadfoot" wrote in message
...
I going to build a 11 element yagi but the problem I'm having is I can't
find the aluminum rods, I was wondering if I use copper if I will still get
the same Db gain.

I was thinking of another metal was to use brake line from a car that I
can get in the auto parts store.

Thanks
Ledfoot