C
Chamba
If absolute purity is you aim, don't overfill the machine, try one shorter duration run of 5 minutes and then card the resin in a W pattern to and fro over the flat screen for as long as it takes to clean it up.
Press the card down fairly hard and hold it at an angle as you scrape the resin over the fine mesh. The idea is to break up the bits of leaf and calyx and and along with the resin stalks, force them through the fine mesh leaving the resin heads on top.
Don't try this with just dried material as the resin heads probably won't be hard enough and will smudge on the mesh gunking and blocking it up quickly*. Also don't card with (early harvested) material that has small resin heads (35 ~ 80 micron) as half the resin with pass through the 200 mesh/70 micron flat screen and half will stay above. Many mature strains have around 90% of their resin heads in the 70 ~ 100 micron range, so re-sieving/carding over a 70 micron mesh will really help clean it up.
* to clean a gunked up mesh, use a one or two inch/26 or 52 mm wide paint brush and paint alcohol over the mesh (over a plate or a sink). Alcohol won't hurt the wooden frames or the synthetic mesh, Use a really "wet" brush so it drips through, do both sides. Compressed air is good to blow it clean..I guess a blow dryer would work too (just make sure to seal your bottle of alc first to prevent self-immolation). You can filter and evaporate the alcohol and dissolved resin heads. I've done this a few times, but really, it's not worth it.
Press the card down fairly hard and hold it at an angle as you scrape the resin over the fine mesh. The idea is to break up the bits of leaf and calyx and and along with the resin stalks, force them through the fine mesh leaving the resin heads on top.
Don't try this with just dried material as the resin heads probably won't be hard enough and will smudge on the mesh gunking and blocking it up quickly*. Also don't card with (early harvested) material that has small resin heads (35 ~ 80 micron) as half the resin with pass through the 200 mesh/70 micron flat screen and half will stay above. Many mature strains have around 90% of their resin heads in the 70 ~ 100 micron range, so re-sieving/carding over a 70 micron mesh will really help clean it up.
* to clean a gunked up mesh, use a one or two inch/26 or 52 mm wide paint brush and paint alcohol over the mesh (over a plate or a sink). Alcohol won't hurt the wooden frames or the synthetic mesh, Use a really "wet" brush so it drips through, do both sides. Compressed air is good to blow it clean..I guess a blow dryer would work too (just make sure to seal your bottle of alc first to prevent self-immolation). You can filter and evaporate the alcohol and dissolved resin heads. I've done this a few times, but really, it's not worth it.
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