Introduction: The Third Dimension Isn’t Always Enough Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. For years, 3‑axis CNC machining was the standard. It’s reliable, affordable, and perfect for many parts. But as…
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: Why Silicone Molds Are Essential for Critical Applications Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past decade, I’ve designed and produced hundreds of Silicone Molds for clients in medical…
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: Two Titans of Powder Bed Fusion Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. When it comes to industrial Nylon 3D Printing, two technologies dominate: SLS (Selective Laser Sintering) and MJF (Multi…
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: 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…
Introduction: The Price Beyond the Print Button Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Many people assume that the Costs of 3D Printing are just material + machine time. Click print, wait,…
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…