[Integza]’s rocketry projects are one such example, so he decided to explore turning a MIG welder into a 3D printer for his own nefarious purposes. (Video, embedded below.) The build is as ...

[Brett] from [Theoretically Practical] has done with his old MIG welder ... and a spot welding timer. Pre-flow starts the flow of shielding gas a moment before energizing the filler wire, while ...