Trying To Find Screens

I am trying to find screens to sift trim for hash. I posted this in the advanced section and someone said that they bought one made of polyester and it's useless. Does anyone know where you can find screens like the ones that are in grinders, only bigger?...thanks

anyone??...thanks

here is were you get the screens, Nylon 6/6 Screen Cloth Mesh | Filtration

and here is were you get the fabric
Cordura - Ballistic Nylon - Heavy Duty Fabric - Specialized Textile Outfitters

i'd recommend the 1000 Denier Cordura Plus®
Heavy Duty Nylon Fabric for the fabric
my wife sowed mine but im sure it doesnt cost much to pay someone to sew it.