Absolutely those are perfect to use.

Just be careful when useing the coffee grinder.....or other grinder....

Keep the pulses short and quick. Heating will displace or 'melt' some of the trichomes and expose the THC to air....

Every little bit counts....
HARDDON Reviewed by HARDDON on . HARD ON'S HASH OIL PART 1 Ingredients needed: 1. About 1 or 2 ounces of weed, clippings, stems, leaves etc.... The more potent the ingredients, the more potent the oil. 2. 99.99% Pure Alcohol...You can also use Everclear. 3. Coffee Bean Grinder...Burst shred your stuff to keep temps down. It should be like a sawdust consistency. Rating: 5