GaeaStar's 3D-Printed Clay Coffee Cups Are Disposable, but Can They Save Us From Microplastics?

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GaeaStar's 3D-Printed Clay Coffee Cups Are Disposable, but Can They Save Us From Microplastics?
CoffeeSustainabilityEarth Day
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GaeaStar’s 3D-printed disposable clay cups are available in the US for the first time today, but only at Verve Coffee shops in San Francisco.

We’ve all done it. You’re in line at a coffee shop but forgot your travel mug at the office. You wait to order, trying to decide between buying a new $40 reusable mug at the counter or walking out with a little paper cup in your hand and a pang of guilt in your heart. There’s some good news. A company named GaeaStar is offering a third alternative to US customers: a clay cup that sits somewhere between disposable and reusable, containing zero plastic and zero paper.

But because people wanted to reuse them, GaeaStar started using a quartz-based glaze on the interior to make it nonporous and safe to reuse—milk-based drinks and porous vessels don't exactly mix. Without it, ceramics can feel a little gritty against your top lip when you’re taking a sip out of them. Semi-Handmade Despite being 3D-printed into a spinning mold, each cup is unique in a way that makes them feel handmade.

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