Agriculture Reference
In-Depth Information
PROPER SCREENING METHODS
Now that you have an idea of what screening is about we can
look at it in better detail. This explanation will apply to all of the
above screening methods.
We stated that a metal screen is used first followed by a silk
screen. Nowadays steel fabrics can be bought in sizes that have much
smaller pours than even the finest silk screen.
You should typically look for a metal screen that is ranged
somewhere between 100 lines per inch to 140 per inch. A common
screen used by most home hash makers is a screen with 120 lines. A
wooden frame is constructed to hold the screen in place on one side.
You can glue the screen on or nail it into place.
Take 4 small wooden blocks and place them over a sheet of
glass or a mirror. Place the screen over the blocks. Have a gap of an
inch or so between the mirror and the screen. Place small amounts of
skuff on the screen and gently role it back and forth across the screen
using a credit card or similar plastic object. Do this very gently, over
and back and over and back and over and back. You may have to push
the skuff over and back a hundred times before you can see the tiny
resin glands gather on the mirror below. All this is done with very
little pressure.
Once you have collected as much resin glands as possible use
the card to sweep them off the mirror and onto another surface. Now
take the 'used' skuff and this time apply a bit more pressure to it as
you roll it back and forth across the screen. With this little bit of extra
force applied you will be able to knock through any resin glands that
did not fall through the first time, but you will also push through some
veg material such as branch shavings and leaf particles. This second
round of pressing will result in a lower quality grade of skuff.
You see skuff is skuff. From when you cure your trim to the
