I've been using my Blendtec twister jar. Takes about 4-5 seconds for a sandy small pebble texture, remove some, then 4-5 more seconds I get light snow for popcorn.
I make about a cup or so once a week. In a pinch I use one of the microplanes or a veg peeler for slivers.
I did have one batch turn a bit creamy recently but it was going into a risotto anyway. Left a bit in the jar and made a nice salad dressing.
It is possible I over blended or my cheese was room temp-ish. Dozens of times previous that never happened.