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Coffee Puck sticking to shower screen

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Hi Guys,

Anybody else suffer from the puck sticking to the shower screen when you remove the portafilter?

I ususally get this 50% of the time and it drives me nuts.... I’m assuming it’s to do with the suction when the valve does the business?


I have tried everything to minimise the issue. Using a 18gram shot with the standard double basket with an IMS shower screen. Tried different force tamping, twisting, varied the shot weight. Doesn’t make any difference really.


Any thoughts?

Rocket R58 V2, Mazzer Royal ( Ti Burrs ), 6 Cup Chemex, 6 Cup Venus Moka. Bonavita Drip Scales & Temp Controlled Goose Neck Kettle

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This normally happens to me if I don't leave enough gap for expansion of the puck, so to resolve (assuming a consistent weight in) I loosen off the portafilter by ten/twenty degrees or so. Whether you can do that may depend on the seal/gasket on your particular machine.

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