Uploaded December 2025 | Updated September 2026, 3 weeks ago
In this video, Mi Changwu, a skilled welder from CRRC ZELC, takes on a micro-precision welding challenge.
Two steel wires, separated by just 1 millimeter, must be welded together, while a fragile glass bulb sits only millimeters below. With welding temperatures reaching thousands of degrees, even a slight loss of control could damage the glass or ruin the joint.
It is a test of steady hands, precise control, and long-term training—where precision matters more than speed.
In this video, Mi Changwu, a skilled welder from CRRC ZELC, takes on a micro-precision welding challenge.
Two steel wires, separated by just 1 millimeter, must be welded together, while a fragile glass bulb sits only millimeters below. With welding temperatures reaching thousands of degrees, even a slight loss of control could damage the glass or ruin the joint.
It is a test of steady hands, precise control, and long-term training—where precision matters more than speed.
