How To Use A Grinder: A Step-By-Step Guide - .
In a three-piece grinder, the bottom of the grinding chamber will have holes for the ground-up bud to fall through (a two-piece grinder won't have those holes). When your weed is chopped small enough in the grinding chamber, it will fall through the holes into the collection chamber. You can then unscrew this bottom chamber and collect the pot for use. So to review: Lid + Grinding Bowl ...
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