When it’s PLA ... 3D printers exist for the sole purpose of turning 1.75 mm filament into other shapes and sizes. It felt a little strange to use a 3D printer simply to turn 1.75 mm diameter ...

Ground plastic bits go in ... a direct-extrusion 3D-printer. And like all of his builds, it’s made from scraps and bits most of us would throw out. Pellet agitator is part of the extruder.

Find the most reliable 3D printing filaments for your next project, from everyday PLA to advanced specialty options.

Every good 3D print starts with plastic, usually in the form of colorful strands wound neatly on spools. Though the 3D printing hobby is jampacked with do-it-yourselfers, making your own filament ...