here is a place that has awesome prices on hash (ice method) making bags.... i would invest in these just for the practice alone..... they seem to be of good quality, and stand up to a decent amount of abuse.... got the link from hg420, they seem to have an in depth thread about it over there http://www.filterbags.com/filter_bag_pricing.htm
Didnt see a price on there. Also they appear to be small in diameter something like 7''. That wont fit over a five gallon bucket and might make it hard to work with. Especially when you try and fold it inside out to scrape the resin glands off the screen.
yeah, i checked out that thread too. good prices for some quality bags, but still just another homemade hash making tool from what i see. i was going to buy some, but im gettin tired of the mess you deal with using 2nd rate hash making tools. still a good buy for someone who doesnt have a lot of money to spend, or bags of trim like i do.