"Richard" wrote in message
m...
Basically, how to? Rolled wire edges on thin aluminum sheet?

On the right side of the page are illustrations on how to do it on a rotary
machine.
http://www.tpub.com/content/construc...s/14251_59.htm

You can also do it with a hammer and a stake, but that takes a long
explanation.

Paul K. Dickman