[Dominik Meffert] has done exactly this with his wire 3D printer project. Extruder cold end using a standard feeder roller For his filament, [Dominik] chose standard welding wire, and has also ...

A multiprocess arc/MIG/TIG welder sells for between $700 and $3,000. Flux-core wire is a wind-resistant option for wire welders used outdoors. A core of flux in the welding wire melts and shields ...