Precious Plastic is giving instructions on how to build a series of simple machines that will let makers turn plastic trash into new material.

Waste materials like plastic bags are inserted into the teeth of the machine and come out the other side looking like pencil shavings. Those shavings can be heated up in any household oven to ...

They 3D print the traces with conductive PLA filament directly onto a base plastic sheet, and then vacuum form the whole thing. The filament is happy to deform when heated – it’s printer filament.