I don't mean this to be an advertisement, but I have tried a few metal coffee filters, and have not been able to find one that works as well as one from a company called Ovalware. Its the only one I could find that lists a micron size for the inner mesh (40 μm). I've found that this draw down time is faster than a paper filter, it is still slower than other mesh filters. And while it doesn't quite eliminate fines, it does a great job keeping most of them out of my coffee compared to other mesh filters. I've also not had any trouble with the filter coming apart at the seams, or getting coffee grounds stuck between the inner and outer layers.
Has anyone tried this filter? Or have you found other metal filters that you've liked?
I've been using the Coava cone off and on for a few years and I like it. Lately I've moved back to paper for the most part, as I'm trying to learn "the right way" to do a V60. But this morning I did a metal cone actually.... and it didn't work out well. It was kind of an experiment to see what'd happen if I pre-sifted out the fines (I have a 500 micron sieve). Alas, this led to an extremely fast drawdown. I knew that fines slowed drawdown in paper, but people don't talk about metal out here very much, hence the experiment.
Do you get a lot of fines if you don’t pre-sift? And what grind size do you use? What went wrong? I’m guessing it was under extracted because the water flowed too fast.
I wonder if metal filters work better with a Hario Switch type of coffee maker, where you can stop the flow down of water and let the grinds steep for a bit longer.