Patience is a virtue and that is certainly true when it comes to collecting kief in most cases. Unless you have access to a lot of high quality cannabis and the time to process it you may be waiting for a spell like the rest of us ordinary folk for the kief catcher in your grinder to fill. There are some things you can do to help speed this process along of course.
First and foremost make sure you are actually using a three chamber grinder with a kief catching bottom chamber. Most grinders are designed this way by default these days but not every single one will have the third chamber with the screen and catcher. Never checked your own grinder at home? Grab it firmly by the midsection and twist the bottom piece off and you may be in for a happy surprise!
Some things to watch out for while you are trying to collect your kief over the course of grinding up your cannabis and using it as you normally would would be the clogging of the screen and the overfilling of the chamber. Keep an eye on both of these things and clean the screen with a fine brush semi-routinely to make sure all of those beautiful kief crystals can find their way to the bottom of the grinder.
Some people also like to place a small heavy coin in the upper collection chamber of the grinder such as a nickle if your grinder is large enough for it. When grinding up the bud shaking up the grinder with the coin inside helps to knock free some extra kief and send it down to the screen and kief catching chamber below!
Another way to collect some marijuana kief if you do happen to have access to large quantities of cannabis and an oversized very fine sifter or screen would be to skip all of the waiting and process your buds into kief. One ideal kind of screen you could use is a silk screen which is the same time of screen often used for t-shirt printing and can be found at most art supply stores. In order to sift cannabis make sure you get a silk screen with an LPI (lines per inch) rating of between 80 and 270 LPI.
Depending on how serious you want to get about sifting your bud you may want to select a series of screens with a various range of LPI ratings from larger to small while still falling between the 80 and 270 LPI range. This will allow you to sift your material over and over using finer and finer screen sizes making sure that you remove absolutely all of the green plant matter that you possibly can. If you’d rather not do this extra work you can simply get the finest screen size possible and sift your material using only the single size.
If you’re ready to get really serious about how to use kief and collect it in the most efficient manner you could also invest in a kief box or a flat screened sifter box which are both available online from specialty cannabis retailers.
The best method for collecting your kief using any of these aforementioned screens is to add a large amount of ground cannabis to the screen and push it around and back and forth across the screen over and over with an old gift card or credit card or another suitable piece of solid plastic.Make sure you use a container under the screen of course to collect your kief!
You can also save yourself a whole lot of trouble and work by just buying kief that has been processed for you available at your favourite online dispensary!