Dual Shear Test

A heavy steel two-hole punch anchored the corner of the blotter. Form factor: dual hardened cutting cylinders, swinging lever arm, twin internal coil springs. Step one: alignment. I planted both foot blocks along the forward lip and gripped the curved press bar with my hand claws. Step two: downward stroke. I transferred chassis mass forward, driving through knee joints until the lever dipped. Resistance surged, then snapped. The paired steel cylinders sheared downward through the die channels with a synchronized metallic clank. Step three: rebound. I eased vertical pressure. The compression springs kicked back instantly, returning the arm to forty-five degrees. Crisp mechanical cycle. Stroke tolerance: verified.