Hey, I’m Barry Zeng. I’ve been in manufacturing for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory. If there’s one design detail that causes more arguments between designers and toolmakers than any other, it’s draft angle and surface…
Hey, I’m Barry Zeng. I’ve been in manufacturing for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory, and if there’s one thing I’ve learned about tiny plastic parts, it’s this: FDM 3D printing is terrible at making them.…
Hey, I’m Barry Zeng. I’ve been in manufacturing for 12 years at Shanghai Yunyan Prototype & Mould Manufacture Factory, and if there’s one thing that’s genuinely changed how I think about mold making, it’s 3D printing. I still remember the…
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 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 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: 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…
Introduction: Your Trusted Partner in Precision Manufacturing Hi, I’m Barry Zeng, a senior manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. For over 12 years, our factory has delivered high-quality custom plastic injection molding solutions to clients across…
Introduction: The Production Gap Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the most painful moments in product development is the “production gap” — after you’ve finalized your design but before…