Copper Trellis

I'd like to create a few small trellises for vines grown in containers. I was thinking copper tubing would be attractive and easy to work with. I did some searching last night and came up with quite a few links and directions on "how to". The last link is to a book but there's five pages of sample projects shown. It would be very easy to figure out your own designs by printing out the samples.

http://www.anythingicando.com/season2/proj_48/proj_48.htm
http://dsc.discovery.com/fansites/lynettejennings/data/9033.html
http://www.michaelholigan.com/Departments/TVShow/images/trellis.gif
http://www.trelliscraft.com/idx.htm