a quick 5 second on and off will give you a nice chunky bud substance w/ enuff growned up weed to evenly roll a joint or blunt but also alowing it to burn slower than if powdered.
anything after like 10-15 seconds will grind your weed up fine enough for ANYONE to bar a pencil-looking blunt or joint, but in my experience...throughly grinding my weed will actually cause an uneven burn in my joints(doesn't apply to blunts) simply because the weed is spread evenly..but the paper never will be..thus giving me that canoe affect...but even THAT can be overridden by superior rolling skillz...
hey i think ima try to start a vid thread for people to show off their rolling skillz...i dunno if enuff people would take the time to film themselves rollin a blunt tho...(its kinda hard...)