Brass tubing is hard to find, and it's subject to corrosion. There are lots of sizes of thinwall stainless tubing available on Ebay, and it's easier to work with, and more durable than brass.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!