Screw off the lid, put your plant material inside, screw the lid back on, shake it, shake it some more, et voila: there are your crystals!
Capacity: ~5 g dry plant material
Screen: 150 micron
Capacity: ~500 g plant material
Screen: Standard 150 micron
This is the original dry sifting machine, invented winter 1992, released on the market in November 1994. This model is suitable for up to 500 grams of dried plant material in one go.