Hey, I’m Barry Zeng. I’ve been designing and building injection molds for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory, and if there’s one design mistake I see over and over, it’s this: people forget about draft angles.…
Hey, I’m Barry Zeng. I’ve been designing and building metal casting molds for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory, and if there’s one thing I’ve learned, it’s this: making a die casting mold is not for…
Hey, I’m Barry Zeng. I’ve been designing and building injection molds for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory, and if there’s one thing I’ve learned, it’s this: a bad part design will ruin your project before…
Hey, I’m Barry Zeng. I’ve been designing and building injection molds for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory. If there’s one thing I can tell you, it’s this: injection mold making is definitely not a weekend…
Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. If you’ve ever looked at a metal part — a car transmission housing, a laptop hinge, or a power tool body — and wondered, “How…
Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. If you’ve ever wondered how those precision metal parts in your car, your power tools, or your smartphone are made — the answer usually starts…
Introduction: The Steel Behind the Spark Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. If you’ve ever wondered what kind of superhero metal can withstand molten aluminum shot at 1,000 miles per hour,…
Introduction: The Heavyweight Champion of Metal Parts Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. You know those shiny metal parts in your car engine, your power tools, or your kitchen faucet? Chances…
Introduction: The Little Cap That Could (And Does, Billions of Times) Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Raise your hand if you’ve ever opened a plastic bottle — water, soda, shampoo,…
Introduction: Quality Starts with the Mold Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. For over 17 years, I have designed, built, and optimized thousands of Injection Molds. A high‑quality mold is the…