Introduction: The Hidden Cost of Smooth Surfaces Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the most common mistakes I see on engineering drawings is over‑specifying surface finish. Designers write “Ra…
Introduction: The Metal Manufacturing Crossroads Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. More and more clients ask me: “Should I CNC machine my metal part, or use DMLS (Direct Metal Laser Sintering)…
Introduction: When Standard Plastics Aren’t Enough Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. For most applications, ABS, nylon, or polycarbonate work fine. But when you need parts that withstand extreme heat, aggressive…
Introduction: The Finishing Touch That Matters Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. After machining thousands of CNC Milling Aluminum Parts, one of the most common questions I get is: “What anodizing…
Introduction: The Critical Role of Heatsinks in Modern Electronics Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Every electronic device — from a 5G base station to an electric vehicle inverter — generates…
Introduction: Design Decisions Drive Cost Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past decade, I’ve seen designers unknowingly double their Parts CNC Machining Expenses with seemingly minor design choices —…
Introduction: Precision Matters Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the most common questions I get is: “How accurate is SLA 3D printing compared to CNC machining?” The short answer:…
Introduction: The Heart of Thermal Management Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Every electronic device — from a smartphone to an EV power inverter — generates heat. Without effective cooling, performance…
Introduction: The Hidden Link Between Hardness and Quality Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past decade, I’ve machined everything from soft plastics (Shore D 50) to hardened tool steel…
Introduction: When Precision Meets Patient Safety Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. In the medical device industry, there is no margin for error. A 0.01 mm deviation in a bone screw…