The easiest way to make hash, and get great yields is to use the dry ice method. I treat my trim like bud, you want it dry, but not too dry.
I just made some great hash from a Jack Herer plant using 160 micron bags and dry ice.
Fill bucket with trim, break up dry ice into bucket, put bubble bag on bucket, shake out over glass table, gather pollen, and done!
http://www.youtube.com/watch?v=q9yu_7eMv6M