Speer Hammocks sells a "Make your own hammock kit" - which comes with the pattern AND all the materials... www.speerhammocks.com
Hammock Forums has an insane amount of info on all subjects related to hanging in the backcountry... www.hammockforums.net
More great items listed on Just Jeff's Hammock Camping page www.tothewoods.net
And, better than all the rest, talk to our resident experts Te-Wa and Drewboy. These guys are legends in the AZ hanging community.