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 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 mold design will cost you money, time,…
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…
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 had to order replacement parts for a product — or if you’re planning to produce a…
Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. If you’ve ever looked at a plastic part — a gear, a housing, a connector, or even a toy — and thought, “How do they…
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: The Little Plastic Heroes Keeping Your World Running Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. You know that weird plastic gear inside your coffee maker? Or the little clip that holds…
Introduction: The Day I Learned That CNC Doesn’t Forgive Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. I’ve been building injection molds for 12 years — long enough to know that a CNC…
Introduction: Choosing the Right Manufacturing Process Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past 17 years, I’ve helped hundreds of clients decide between two of the most common manufacturing processes:…
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…