I do the following to filter my boils
1) perform 3x acid boils and simply filter off the liquid into a pot to reduce down the liquid.
When I filter off the liquid, I make use of a metal strainer with a fine mesh, this prevent the large piece of bark from making it into the liquid.
2) once reduced, I then do another pass with a metal strainer.
3) after that, I let it sit in the fridge for a while (4 hours), during this time, the sediment will sink to the bottom.
4) take it out, and filter off the liquid.
Note: I usually stop here, as the majority of my bark isn`t ultra fine particles, as I prepare it myself, and those who have done this know that to get it to a commercial level of powder requires a LOT of work, and possible damage to consumer level blenders.5) I place a raggy t-shirt over the top of a HDP jug. I hold that in place and pour the liquid through.
This usually has no problems going through at a fast pace. If it does clog up, I then grab 2 opposite sides of the t-shirt and pull them apart.
Alternatively, the liquid can be swirled around, but that sort of allows some of the sediment to seep through, but Multiple passes can be done.
I then wash the t-shirt under water to remove the sediment for future uses.
Step 3 can be skipped if you are in a hurry, or the time in the fridge reduced.
The above process has never been a problem for me.
Best of luck
