A new study highlights the potential of using old coffee grounds for 3D printing. Researchers developed a method that combines coffee grounds with sustainable ingredients to print items ranging from jewelry to espresso cups. The innovation began as a solution to manage excess coffee waste during the
Coffee can do a lot of things: Wake you up, warm you up, and lessen that existential dread. It could also help reduce the waste from 3D printing, according to a new study.
The group presented its findings this summer at the Association for Computing Machinery’s Designing Interactive Systems conference in Pittsburgh. “The owner told me, ‘I don’t know what to do with it. So I just throw it away,’” said Rivera, who joined CU Boulder as a postdoctoral researcher in 2022. “I looked at the grounds and said, ‘Maybe I can do something with them.’”Rivera explained that most consumer 3D printers on the market today print with thermoplastics of some kind. The most common is polylactic, or PLA. This material is, theoretically, compostable, but only a fraction of composting facilities will accept it.
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