Glowing hot steel bends like clay in his hands. - Video

Sculpting natural human posture out of rigid steel wire traditionally requires hammering each individual joint into position over an anvil. Metal fabricators bypass this tedious shaping process by exploiting the extreme thermal plasticity of mild steel during live welding operations. To pose a miniature wire figure hanging from a girder, the welder first tacks the straight wire hands directly onto a heavy steel beam using a high-amperage electric arc.

Concentrating the welding torch on the thin wire torso rapidly drives the metal past one thousand degrees Celsius, causing the iron alloy to glow bright orange. At this critical temperature, the internal crystalline lattice of the steel loses its structural rigidity and transitions into a malleable state known as the austenitic phase. Instead of resisting force like a hard spring, the incandescent wire temporarily softens to the consistency of warm clay.

Before the metal can cool and reharden, the fabricator grabs the base of the glowing sculpture with pliers and pulls it downward. Because the hands remain fused to the beam, the tension stretches the heated joints smoothly into a natural hanging arc, locking the lifelike anatomy permanently into place the moment the steel cools back to room temperature.

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