heres a couple of good linksfor bags and materials.at small parts.com put in nylon screening and you can pick the thicknesses you want

http://www.smallparts.com/

http://www.filterbag.com/
thcbuz Reviewed by thcbuz on . 155 mesh silkscreen Is a 155 mesh silkscreen ok to use to make hash with? If so, hows the quality of the hash? thanks!! Rating: 5