Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. If you’ve ever needed a replacement part for an old machine — and the manufacturer told you it’s discontinued — you know the pain. Or…
Introduction: The Steel Behind the Spark Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Have you ever held a precision metal part — a bracket, a gear, or a housing — and wondered,…
✋ Hey, I’m Barry Zeng — Senior Manufacturing Engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past 12 years, I’ve helped hundreds of clients take their part designs from a napkin sketch (or a CAD file) to…
Introduction: The Day Your Machine Stops — and How to Fix It Fast Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Picture this: it’s 3:00 PM on a Friday. Your most important production…
Introduction: The Spare Parts Dilemma Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Every week, I help clients produce Custom Non-Standard Spare Parts — components that are no longer available from the original…
Introduction: The Ultimate Machining Challenge Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Titanium is the material of choice for aerospace, medical, and high‑performance automotive components — but it’s also one of the…
Introduction: CNC Turned vs Milled Parts — The Cylindrical Advantage Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Every week, I see designers specify CNC milling for components that could be machined faster,…
Introduction: The Complexity Crossroads Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the most common questions I hear from designers is: “Can my part be machined on a standard 3-Axis CNC…
Introduction: The Traditional Manufacturing Penalty Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. In traditional manufacturing — CNC machining, injection molding, or casting — complexity costs money. A simple bracket with straight walls…
Introduction: The Stainless Steel Challenge Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Stainless steel is one of the most popular materials for CNC Machining Stainless Steel projects — but it’s also one…