In context: Several recent experiments have broadened the potential applications for 3D printing. Although most users wouldn't consider hot glue a viable building material, it has important ...

If you’re building a 3D printer, the most complicated part is the extruder. This part uses a series of gears to pull plastic filament off of a spool, heats it up, and squirts it out in a manner ...

Back when 3D printers were pretty new, most of us had glass beds with or without painter’s tape. To make plastic stick, you’d either use a glue stick or hair spray. Many people have moved on to ...