I know this thread is old but I have to let ya know that if you want kief all you have to do is get a 220 micron bag from whacky bags dot com and some dry ice. Break up some dry ice, put it in the bag along with some trim or bud. Let it chill for about 30 seconds and shake the bag over a glass table. You will be amazed on how much kief falls out of the bag onto your glass table. Stop shaking once the kief starts to turn a light greenish color. Kief has a tan look to it. Good luck! And aslo its much quicker and cheaper to do it this way and you get all the kief off your weed.