This is a pdf document I found that describes how to make one, I have no knowledge of it myself.
http://www.orchardvalleysupply.com/domototrellis.pdf

Also, I don't mean to sound patronising, but many of the links found on google searching 'grape trellis system' look
quite promising. Here's a link to the search results:
http://www.google.com/search?hl=en&q...S earch&meta=

Good luck! I am sure when you have some specific questions, the group will be able to furnish you with some great
answers.

Jim

> wrote in message oups.com...
>I want to know some knoldge about this subject
>