But i did it to make this kick ass catanary cut hex fly for my jungle hammock or ground camping. 12 feet across the ridge line. Made my own sil-nylon from cheap light weight 1.2oz rip-stop from wal-mart and then took clear silicon (caulk tube) and thinned it out with mineral spirits and applied it with a paint roller after the project was done and hanging taunt. So far it went a rain shower last night and a sprinkler barrage without one drip inside. Money invested, 18$ and a lot of free time Should weigh in about 18 oz.