FB300 (300 micron filter size) ~8 per bag.I think they nylon monofilament mesh should stand up well to make water hash I would not suggest using the polypropylene felt version.įilter bags that you can buy one at a time, 7" mouth x 32" long:
They a bit pricey but much cheaper than bags marketed to cannabis growers! They are washable (the 1 micron seemed to be overkill and is slooooow to filter). Here is a source for bags I have used for poppy-opium extracts, and brewing aerated compost tea. You want to use polyester mesh instead of nylon with water filtration because the holes retain there rated size better (explained more later in this thread). The polyethylene mesh has greater resistance to acids and organic solvents than the nylon mesh. The resistance to abrasion of nylon mesh surpasses that of polyethylene (polyester) mesh. Multiple applications for the mesh material. On the website the polyethylene screens are labeled as "polyester mesh", nylon is simply "nylon". Here's a link explaining the distinction:Ī and ebay are good sources for little pieces of cheap metal mesh screen for dry sieving kief, but amazon in particular offers nylon and polyester (polyethylene) mesh in 12" x 12" and 12" x 24" sizes for a few dollars (actually the prices change every week on amazon) in the following sizes: The mesh filter of the ice water extraction bag screen is woven polyester monofilament mesh.Īnother distinction to understand in micron mesh ratings is absolute rating vs. Monofilament will let you know the thread diameter.įolks are also constantly linking to Chineese industrial suppliers for mesh materials who aren't going to sell a few dollars worth of stuff to you or me. Multifilament mesh has a rating with "xx" (example: 10xx) in its rating while monofilament does not. It isn't that this multifilament polyester won't work, it is that the monofilament mesh holes will retain there rated size much better and that the monofilament filter itself is more durable. Most of the "silkscreen" and printing cloths you find online and at craft stores is going to be multifilament. Here's an article explaining the distinction: "Silkscreen" is just a term nowadays and is usually multifilament mesh when what you acutally want is monofilament mesh. Iam constantly seeing people in different hash forums around the internets link to and ask about "silkscreen" or purchasing pieces of mesh material. I have seen these screens commercially available in the three following sizes: The screen is instead left on top of the layer of absorbent paper towels for a little while before being folded over and being gently "dabbed" at with a fistfull of paper towels. Many don't fold the screen over and press the screen with any kind of force.
Some ice hash makers don't really like the term "pressing" screen. Name-brand pressing screens cost around $15 and are only about 12" x 12" usually. Pressing screens, dabbing screens, blotting screens, drying screens(all the same thing), are made of the same mesh as a bags filter and are most often a 25μ size. Please contribute any sources/sizes I may have missed. I didn't use Ebay as the source for any of this information on availability, and you should not waste money on cheap or counterfeit bags offered at any auction sites.Ģ. This final bag is a low yielder and is most often considered lower-quality than the above micron sizes, higher-quality when using a sativa as starting material.)Ģ5μ -A common size bag most often used as the final bag.Ģ0μ -Sounds tiny to me, but I haven't done runs with small-gland pure sativa material before.ġ. (Anything that drains below the final bag is not worth collecting, so the size of the final filtering screen is important. Trichomes form Sativas will collect more on the smaller size bags, whereas with indicas you will see more quality stuff at this layer. (The following size bags are generally considered only good for cooking, adulterant for good hash for sale, or mixed with 25μ and given away to friends.)ġ35μ -I haven't seen this size used, but I would think that depending on strain/sativa dominance this could fall into either this or the next category.ġ20μ -Generally considered the start of what you want.
All of the following micron sizes for 5-gallon water hash bags are available online as of June 2011.Ģ20μ -This is the common size for the workbag, but Dropbags, among others, makes a 230μ and some larger sizes, up to 400u (suited for different plant material, just saying).
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