Wow! This thread seems to be right up my alley! I've just read it from the start and love the sort of intellectual and practical developments that have been made in the past few years regarding grind particle size and 'fines' (a rather contentious term it seems!).
I do own a coffee grind sizer, which I bought from Coffee Chemistry (http://coffeechemistry.com/product/36-c...rind-sizer
), and have used it sporadically to sift my ground coffee. It actually comes with 19 sizes of screens, though you can only use four or less each time you sieve. The 'tower' is actually made of five separate 'tubes' of acrylic, and you place each screen between these acrylic sections. The problem with it is:
1. It's a massive pain in the ass to sieve the coffee (I actually spend several minutes vigorously sieving and break into a sweat doing so).
2. It's messy as all hell and difficult to clean up after you're done (which is certainly not ideal if you don't want to spend 20 minutes making a coffee and another 20 minutes cleaning up).
3. It's not the most consistent process, and the reproduction of results is difficult (considering the variance in manual sieving).
Below is a picture of when I used two screens (1mm/1000 microns and 250 microns):
So, I think it's a great tool for doing a crude measurement of grind particle distribution, but not so great for when you want to brew coffee. That being said, I did notice a much better tasting cup when I did sieve. I will of course qualify the previous statement by saying that I was using a Hario Skerton mill at the time (with its problematic shaky burr), albeit at a finer setting for a V60 pour over.
Currently, and perhaps this is way, way, way, way, way overkill, I'm considering getting a full set of test sieves and a sieve shaker from Coffeetec (http://www.coffeetec.com/Shaker_for_sie...inoren.htm
I appear to be some kind of mad coffee 'scientist'. Then again, I do live in a country with a lot of lightning storms, which really adds to the effect...
"Really great things are evident to anybody who's paying attention." - Charles Babinski