Coffee Appreciation

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Jonny69

Here’s an interesting thing. I had to replace the dispersion plate in my Gaggia Classic. I was warned about the cheaper ones because they have smaller holes than the original, which can cause problems. I’d planned to re-machine a cheap one to OEM size, but I thought I’d throw it in and see how it actually affects a shot. Most of the time it’s fine, but if you grind too fine and choke the machine you get this interesting quad channeling going on.

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Ptown in reply to @Jonny69

In my mind, I'd imagine you'd get the same channelling when grinding a bit coarser too, just not as obviously visible in the puck. What do you think?

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Jonny69 in reply to @Ptown

I think you're probably right. It's actually made me want to compare the water flow between the original plate and this one, both with the shower screen taken off. I wouldn't mind betting both of them 'squirt' 4 jets to some degree (causing channelling) and could be improved on.