Throw a handful of clean pennies in the tumbler with the weed when you get ready to make another batch. The pennies knock more trichs off and increase your yield.
I've been using similar sized mesh over the mouth of a plastic quart storage jar for years. I put a half ounce of weed in the jar,throw in about 10-15 pennies,stretch the mesh over the mouth and screw on the lid. Then I shake the jar while turning it in my palms.
The first shake is gentle and short,a couple of minutes. That run is the best hash,very fine,laying in the lid and clinging via static to plastic sides of the jar.
Scrape it carefully out with a moistened finger and put it the container of your choice. Repeat the shaking cycles/removal cycles until no more trichs come through the screen. I get 2 1/2 -3 grams of hash per ounce of weed.
Of course,I use bud and leaf. The leftover weed is good for bong hits or cooking.
If you use something like pennies,nickles,small nuts.etc.... as an agitator in that tumbler,you should see your yields go way up.