Normcore Lower Shower Screen

A puck screen acts as a diffuser, breaking up the pressurized water stream from your group head into a gentle, even shower. This helps saturate the coffee bed uniformly, which significantly reduces the likelihood of channeling and leads to a more consistent, balanced extraction.

Yes. By sitting directly on top of your coffee puck, the screen prevents coffee grounds from being sucked back into the group head during the pressure release phase. This keeps your shower screen and solenoid valve much cleaner over time.

You should measure the internal diameter of your filter basket. The screen needs to sit flat on the coffee bed without catching on the sides of the basket, so choosing a size that is slightly smaller than your basket's diameter is essential for a proper fit.

Because the screen takes up a small amount of headspace in your basket, you may need to reduce your coffee dose by 0.5 to 1 gram to avoid overfilling. While it shouldn't drastically change your brew time, the added resistance might require a slightly coarser grind setting to achieve your target flow rate.

Rinsing it under hot running water immediately after knocking out your puck is usually sufficient. If you notice oils building up over time, you can soak it in a specialized espresso machine cleaning solution or a mild detergent to restore the mesh flow.