Sign Up For Goods 🛍️ Product news, reviews, and must-have deals. Building a running shoe is, by any reasonable measure, an absurdly complicated process. A conventional pair involves somewhere in the neighborhood of 200 individual manufacturing steps — cutting fabric panels, stitching seams, gluing layers, trimming edges — typically spread across multiple factories and dozens of human hands. It’s a supply chain assembled over decades, optimized for scale rather than speed or precision. On wants to collapse all of that into about three minutes. The Swiss running brand, known for its clever, chunkyu sole geometry and a devoted following among runners, has been quietly building toward a manufacturing upheaval. The technology is called LightSpray™, and the newly announced LightSpray CloudMonster 3 Hyper is its most accessible expression yet. A Robot Arm, 1.5 Kilometers of Filament, and No Stitches Instead of cutting and stitching multiple fabric panels together to create this shoe, a robotic arm sprays a continuous polymer filament directly onto a shoe last — the foot-shaped form that gives shoes their shape. The arm …