I really wanted to like this product. First off, it's well-made, with nice materials. It's also a fraction of the price of the fancy sifter out there. Add in the fact that you get two different sieves for different coffee brewing methods (one is good for pour-over, Aeropress, drip, moka pot, while the other is good for French press), and it seems like a very good value.It's in usage that the concept begins to fall apart. This comes down primarily to the materials used. There is a tremendous static electricity issue going on here. I'm no scientist, but I'd say the glass and metal are a bad choice for something where you have to shake the coffee grounds and generate static: it makes the grounds, including fines, stick to the metal sieve instead of going through it, and also stick to the inner lip on the glass container. It doesn't really help to try and de-static your beans, either before or after grinding, because you're just generating a bunch more when you start shaking it.Add to that, you have to vigorously shake this thing for several minutes to get a good amount of the fines out - and even when I've given it a good 3-4 minutes of shaking, there are still more fines slowly sifting through, fighting the massive static electricity charge. It's just bad design to have such a small surface area actually filtering the grounds.I had to return this after trying my best to make it work. I decided it wasn't worth the effort for the small improvement to the taste of my coffee, especially since it wasn't doing that good of a job anyway. One more thing to mention: it's a bear to clean. The gasket gets grounds underneath it, the sieve needs to be separated and cleaned, the lip inside the glass is very difficult to clean. All in all, it probably adds almost 15 minutes to one's coffee routine, and that's just not acceptable to me.Incidentally, the fact that I saw fines coming out made me keep thinking about whether there's a better way to do this (without paying the big bucks). I ended up ordering Fellow's Shimmy sifter, which normally runs about $20 more, pushing it into questionable territory for Coffee Gear Acquisition Syndrome (I mean at what point does it become a problem?). I got it on sale for $45. Now that I've used it, I recommend it. It has a full-length, 360-degree sieve insert, so tons of surface area that's doing the sifting, and the plastic build doesn't generate much static electricity at all. Less that 1 minute of shaking pretty much did the trick far better than this thing. Plus the cleanup is way easier, all it took was a rinse of all components. Only negative tradeoff: you're limited to a single 200 micron sieve. But for pour-over or drip, it's perfect.
