FAQ - All About Rosin Filter Bags
Do I Have to Use Filter Bags When Pressing Rosin?
Using a filter bag or not is very personal matter, and it depends on your own preferences. If you don’t mind getting a final
product that is mixed with essential oils and plant particles, you don’t have to use a filter bag. Rosin pressed without a filter
bag will taste more like regular smoking. However, if you want to experience better quality dabbing, than we would advise you
on using mesh bags. In addition, you should be aware of that, when pressing with a filter bag, you may experience a slight loss
in yield, which means ultimately you have to decide for yourself what matters to you most, quality or quantity.
What Kind of Filter Bag Material Should I Use?
You can find nylon, metal, polyester, and silk filter bags on the market. The best material for filter bags is nylon. It is heat
resistant, durable and stretches up to 40% under pressure. Stainless steel mesh can easily scratch the surface of the platens
and eventually damages them. Polyester thread bags tend to blowout due to the fact that they shrink with heat, and silk is
prone to blowouts since it doesn’t stretch the way nylon does.
How are Filter Bags Measured?
There are two important parameters: mesh size and bag dimensions. Filter bags are made of a mesh material, and mesh size
is measured in microns. The smaller micron size, the tighter your mesh is. For example, 90 micron mesh has larger holes
between the threads than the 36 micron one. The physical bag dimensions matter, too, since you have to choose the bags
that closely fit your press plates. For example, for 3 by 5 inch plate press, you can choose 2 x 4, 3 x 4, 2 x 6 filter bags.
How Do I Use the Bags?
First, turn your bags inside out so that the seam is inside. Then break up larger pieces and fill the bag evenly with your
material. Make sure it is not overfilled and stuffed to the edge of the bag. Fold the edge of the bag to prevent the material
from falling out of it. If the filter bag is too long, you may need to trim it to remove unused mesh that may trap extract.
Pre-pressing your precursor to create an even thickness puck also helps. The overall thickness of the filled bag shouldn’t be
more than a quarter inch.
How Do I Make Sure The Bags Don't Blowout?
Do not over-stuff your bags with material. Most blowouts happen for this same reason. Use about half of an ounce of flower per one
2.5 x 4.5 filter bag. Another tip is don’t apply too much pressure at once. Proceed slowly. This will allow for air and pressed
extract to be squeezed out the bag instead of becoming trapped inside it and causing the blowout. Using pre-press molds also reduces bags blowout since pre-pressing removes extra air and makes your precursor of equal thickness, which in turn helps to apply the pressure equally to
all parts of the material for better yield.
