Introduction: The No‑Man’s Land of Low‑Volume Production Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the most common questions I get is: “I need 20–100 custom parts. What’s the best manufacturing…
Introduction: The Spectrum from Rock‑Solid to Rubber‑Like Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the most common questions I get about Flexible Resins 3D Printing is: “How flexible is it?…
Introduction: The Fundamental Choice Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. One of the first decisions in any machining project is whether to use CNC turning or CNC milling. Both are subtractive…
Introduction: Every Dollar Saved Is Profit Earned Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Over the past decade, I’ve helped hundreds of clients reduce the cost of Cost-Saving Custom Parts — sometimes…
Introduction: The Hidden Force That Distorts Your Prints Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. I’ve printed thousands of 3D Printed Parts using FDM, SLA, and SLS — and I’ve seen warping…
Introduction: Design Mistakes That Ruin SLA Prints Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. I’ve seen beautiful CAD models turn into failed 3D Printed Parts because the designer didn’t account for SLA’s…
Introduction: The Hidden Environmental Cost of Making Things Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. Every day, I see manufacturing waste firsthand — bins full of metal chips, plastic shavings, and rejected…
Introduction: Precision Where It Matters Most Hi, I’m Barry Zeng, a manufacturing engineer at Shanghai Yunyan Prototype & Mould Manufacture Factory. The healthcare industry demands precision, biocompatibility, and rapid turnaround — whether for surgical guides, dental models, or custom prosthetics.…
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…