I'm not 100% sure but I think mine is aluminum because it was a cheaper one at a head shop ($30) but the kief does stick everywhere on this thing. I usually use the little brush that came with my breard trimmer to brush it all down into the kief box. If I didnt do this it probably would get all sticky in the threads that screw the grinder peices together and it would be hard to open and close but I dont think it would ever be completly stuck shut.
not_the_kitty Reviewed by not_the_kitty 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