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OVERGROW ARCHIVES
Mesh
sizing and kif screening
Added by: snoofer Last edited by:
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Contributed by: Kunta wears a sarong
MICRON VS LPI Mesh sizing
The US and some other countries use
the " lines per inch " or L.P.I.
method of identifying mesh, which is a
measure of how many strands contained
within one linear inch of the mesh. 200
LPI mesh will have smaller hole size
openings compared to 100 LPI because
there are twice as many lines of fiber
per inch.
This LPI method does not take into
account the fact that different mesh have
strands that vary in thickness, which
alter the hole size opening.
The rest of the world uses the metric
measurement system for mesh sizing. The
"micron" - measures the inside
width measurement of each mesh hole
opening. This is a far more accurate
method for determining the mesh size
openings.
ex. "200 micron mesh" has
larger mesh openings compared to a
"100 micron" mesh.
Comparison of mesh measurements
L.P.I. / Micron
83 / 200
110 / 150
137 / 120
Approximate Micron mesh sizes for
hashing
Passive trichcome collection -
Use 150 ~ 160 micron mesh ( 100 ~ 110 LPI
)
Active flat screen -
Use 140 ~ 120 micron mesh ( 115 ~ 137 LPI
)
Ice hash extraction -
See Bubble-man's site for full details
about multi-bag ice hash extraction.
Screening with mesh
Prior to screening ....grind up bud
and resiny leaf to jay rolling
consistency size, but don't cut up the
herb too small.
If you are using a stash-box with an
inner mesh screen cover..... turn the
inner cover upside down, half fill with
ground-up bud, fit the mesh frame snuggly
on the inner cover, turn it over, place
back in the stashbox and agitate it (or
just hold the inner cover, the screen
frame and the glass together) and do the
horizontal circular shake thing for a few
minutes.
If you are not using a box be careful
of draughts as the light resin can and
will fly away with the slightest wind
when actively screening.
Kif quality
Good advice is to stop every few
minutes and set the powder aside in
separate piles - taste and strength-test
each pile. You should find that quality
drops as each subsequent pile has a
higher % of broken up veg matter and less
% of resin heads.
I generally do a side-to-side shuffle
for less than 2 minutes with a half oz of
bud that gives me a small amount of
sticky resin.
I stop when the kif does not easily
form into a shape and stay there with a
little thumb and palm pressure.
Last modified: 04:44 - Jan 24, 2003
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