How is it different to just banging the portafilter a couple of times to get the grinds to settle and then tamping?
Banging causes the grounds to separate into layers of sizes.
Distribution tools help keep the particle sizes more evenly distributed.
I'm talking about a couple of knocks on the bench not running it on a shaker deck overnight. I very much doubt what I do would cause any layering.
@dancing james started
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How is it different to just banging the portafilter a couple of times to get the grinds to settle and then tamping?