Last pass: the cap. This was the beauty pass, the one that would seal the weld and make it strong. She turned her amperage down slightly—less heat, less risk of burn-through. She walked the cup along the joint, oscillating in a tight crescent moon pattern. The filler rod melted in smooth, even drops. The cap formed: a line of overlapping dimes, slightly convex, perfectly uniform.
She frowned. “What are you talking about? Horizontal groove, vertical face—that’s 2G.” 2g position
Mira had been a welder for twelve years. She’d worked on oil rigs in the North Sea, patched up pipelines in the desert, and once, in a storm, fused a cracked support beam on a suspension bridge a thousand feet above a river. Her hands were a roadmap of small burns and scars. She was proud of every single one. Last pass: the cap
“Weld complete,” she said.
The light was searing—a miniature sun blooming against the black. Through her auto-darkening visor, she saw the base metal melt and flow. The filler rod melted into the pool, but the pool didn’t sink. It bulged, a quivering silver bead that wanted to break free. She walked the cup along the joint, oscillating
She watched now. The bead swelled. She tilted the torch slightly—just a hair—and the surface tension grabbed hold. The puddle flattened, wetted the edges, and solidified into a smooth, scaly ripple. First pass, root gap closed.