Someone has tried with vaporizer left overs. If I remember correctly it didn't work but I could be wrong.

For the past couple months I've been grinding my bud with a traditional herb grinder and then chopping it with a knife to get it as fine as I could. I recently went out and bought a coffee grinder and I think it made a huge difference. My normal batches I need 3 caps for a full stone. The batch using the coffee grinder 2 caps had me wandering around town on an adventure straight out of the movies. Three had me glued to my chair, and was wayyyyyy strong, a little too strong at that. I used the same bag of bud for both batches.