phew...just spent several hours going through ALL the posts in this thread! lol
I've used Space Case 2 piece grinders and I think they are awesome. You can essentially grind down to a consistency that you like from course to fine. My only gripe is that you have to be very careful not to load too much herb into them otherwise it overspills and the grinder gets gummed up and stuck very quickly. It doesn't seem to be much of a problem with well dried herb. The olther issue is that the titanium coating chips off. If I ever bought another one i'd try the polished instead.
I've used a couple of Sharp Stones and found the quality kind of lacking. One of them the screen broke and came out, and the other the ring fell off (the friction disk ring). I used the 4 piece and I too find that the holes are too big and the end product is to coarse for vaping. I'm not too concerned about separating kiff... yeah I belong to that fan club, i like my herb with my kif.
So I just want to +1 for the coffee grinder. I totally forgot that was an option so i pulled out the ol blackndecker and pulsed it a few times and voila! Perfect grind consistency, very uniform, tonnes of trichomes, and i can srape off the kif to add it back to the herb, or save it up on the walls of the little plastic cup.
What I can tell forsure since switching to the coffee grinder is that i'm getting waaaay more vapor and i'm getting alot more buzzed! I can't believe it, i must have not been grinding down the bud enough, although i'm sure I was. I'm also using lower temps now. Using my space case 2 piece I was about 15-20C higher temp than when i'm using my coffee grinder.
Does the blade of the coffee grinder somehow release more essential oils or some shit?
Backing to pulsing....and hitting the sphere!