Thanks Kualityman,
Im having an absolute ball, in fact, I surmize that if this were any more fun, itd surely be illegal.

Couple things.
Im interested in your thinking re a filling device. I theorize that there are shortcomings in the dispensing with both dosered and doserless grinders. I suspect that agitating the PF (gently beating it against the heel of my palm for example) to ensure even distribution before topping up, settling, leveling and tamping, pretty much overcomes the shortcomings.
I like your theory regarding tamper shape related to showerscreen shape, but I feel the shape(profile) of the filter basket has an impact in the scheme of things (look away FC
). i.e. When you flat tamp, pressure is applied pretty much virtically, IMO, that doesnt mean even pressure through the grind, filter baskets generally have at least a moderate taper toward the bottom. Potentially, that means weve compacted more around the outside at the bottom. That being the case, a convex tamp could help compensate and even up pressure distribution. If the showerscreens convex, great, if not, what then? Find a filter basket with as little taper as possible?!? Then flat tamp if you have a flat showerscreen. Not quite sure how Id propose coping with your concave screen
Then we get to Robustos theory re water distribution from the showerscreen (which I like), and your fluid dynamics.
So, Id like to discuss your philosophy of the physics of liquids in motion as it relates to the artistic endeavour of creating a great cuppa.
Did I mention I like it in this place?
Jeff

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