Here is a good source for vaccume bagging material. I use this site, and the bag material appears to be around 4 mills thick, which makes a nice heavy duty bag. They are cheap enough to use once and throw away.
http://stores.ebay.com/All-Vac-Seale...Butcher-Supply
http://stores.ebay.com/All-Vac-Seale...Butcher-Supply
