Deloitte's Duncan Stewart anticipates one of 3D printing's most useful applications to be cranking out spare parts for appliance repair. He says,"Rather than carrying hundreds of parts, [repair workers will] have a printer in the back of the van, pay a $2 licensing fee, and your washing machine is fixed. “13 While there is a range of materials than can be printed, ranging from plastics to metals, each with its own lifecycle environmental impact there is a potential for 'green' or biologically-based printing materials.
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