No one will be surprised, then, that the Polyformer machine won a grand prize because it expertly solves two problems at once.
The young co-inventors, Reiten Cheng and Swaleh Owais, designed the Polyformer to achieve two goals: to tackle plastic waste, and figure out how to turn it into low-cost filament for 3D printing, which would be a boon for developing countries.
3D printer filament can be a …
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