From basement startup to high-tech moldmaking with metal 3D printing

At this Michigan-based moldmaking shop, 3D printing isn’t just a side experiment—it’s a core capability that’s reshaping how work gets done. From custom fixtures that cut cycle times in half to metal 3D-printed mold inserts with conformal cooling, Zero Tolerance shows what happens when additive manufacturing is treated as a practical shopfloor tool. Founder Steve Michon shares how his team uses plastic and metal 3D printing alongside five-axis machining, wire and sinker EDM, and CMM inspection to take on complex medical, firearms, and aerospace work.