Here's how
The blender method for making hash
Put water in a blender. Add a large handful of leaves, stems, seeds and weak weed. Put it in 3 or 4 ice cubes and blend it for 3-4 minutes or so. Just make sure everything is chopped very finely. Second, you will need a gold reusable coffee filter (or 90-line silk screen). Get a large mouth quart mason jar, and strain your Slurpee mixture through it. Once you have strained all the liquid through, run some more water through the leaf material to wash any extra trichomes through.
After a few minutes you will notice a white collection at the bottom of the jar, this is the trichomes. Let the trichomes settle at the bottom for about 20-30 minutes. Next, pour off the top 2/3's of the filtered green water, leaving the settled trichomes at the bottom. Add more ice water to get the green stuff out, and let the trichomes settle at the bottom for about 20 minutes again. Repeat this step one more time. Pour off as much water as you can without pouring off trichomes, filter the resulting trichome/water mix through a paper coffee filter. The trichomes will not go through the paper, but the water will. When all the water has gone through, slightly wet, cold, mass of trichomes will be left. They will be easy to handle and to press.