why is there a groove inside chemex glass coffee maker

The Science Behind The Groove On The Chemex Coffee Maker

The Chemex Coffee Maker is a simple and classic way to brew a great cup of coffee quickly. But you may have wondered why there is an indentation, or “groove” along the sides of the carafe. It turns out that the groove isn’t just there for aesthetics – it’s a well-thought-out feature that has a few important benefits that make it easier to make consistently good coffee.

What is the Chemex Coffee Maker Groove?

The groove is an indentation, usually start at the top of the Chemex and go around the sides of the carafe. It is typically about 1/4 of an inch deep, and is usually the same width as the hourglass shape itself.

Why is it there?

The groove on the Chemex is there to make the hourglass shape more secure and stable when resting on the table. This helps it from tipping over and spilling, and also prevents the pour over from being pulled too close to the edge of the table when pouring water over top of the coffee.

The groove is also there to help evenly distribute the heat coming off the coffee when it is served. The heat doesn’t concentrate directly in one spot, as it would without the groove, so it heats the coffee evenly without burning it.

Are There Any Other Benefits?

Yes, there are a few other benefits of the groove on the Chemex coffee maker. Here are a few of them:

  • It Makes It Easier To Clean – The groove on the Chemex coffee maker allows it to be more easily cleaned. Since there aren’t any hard to reach crevices, it can be wiped down easily with a damp cloth.
  • It Creates A Strong Seal – The groove also helps create a stronger seal around the lid, which keeps the coffee hot for longer and prevents it from spilling when poured.
  • It Enhances The Aesthetics – Last but not least, the groove on the Chemex makes the carafe look more stylish, and is a classic part of its design.


The groove on the Chemex coffee maker is a testament to its thoughtful design. Not only does it make the carafe easier to clean and provide a better seal, but it also improves the aesthetics and prevents the pour over from being pulled too close to the edge of the table. Thankfully, the Chemex’s design team thought of it all and created this stylish and functional groove to make the perfect cup of coffee.

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