With the cheaper grinders (aluminum) you will most likely get small shavings of metal in your kief or your ground-up bud. If you can afford it, go with the spacecase...otherwise I'd just use my hands.

I hear these grinders called "Mendo Mulchers" are nice, but I've never seen one before.
Jouryokujin Reviewed by Jouryokujin on . Grinders: Type of Metal? I'm looking at 4 and 5 piece grinders. Some places claim that titanium resists sticking (i.e. SpaceCase), yet the aluminum ones are much cheaper (i.e. Glider). Also, the SpaceCase pollen press is made of titanium, and I've heard that can get so sticky it can lock shut. Any experience with this? Rating: 5