Steven Cheng

Animation: Slide and lifter in injection molds – how undercuts release by Topworks Plastic Mold Interactive tool by Topworks Plastic Mold

Design for Injection Molding — Engineering Resins · DFM Guide Design for Injection Molding Engineering Thermoplastics — A Practical DFM Guide PA · PC · PC/ABS · POM · PBT · PMMA · PPS Part and tool design rules for technical parts: walls, ribs, bosses, draft, radii, gates, runners, venting, ejection, undercuts,…

What Injection Mold Cost from China Really Includes Most buyers ask for a mold price too early. They send a STEP file, say “ABS or maybe PC,” guess the annual volume, and expect one clean number back by Friday. That…

Injection Molding Quote Guide Injection Mold Cost Breakdown: Mold Base, Cavities, Steel, Slides, and Hot Runner A buyer-focused guide to what sits inside a mold quote. Table of Contents Injection Mold Cost Breakdown Mold Base Cost Cavities and Part Price…

Injection Molding DFM Guide 7 Proven Boss Design Rules to Eliminate Cracks, Sink Marks, and Weak Assembly Shop-floor boss design rules for screw strength, clean surfaces, and fewer tool changes. Table of Contents What Is a Boss? Why Boss Design…

Injection Molding DFM Guide 7 Proven Rib Design Rules for Stronger Injection Molded Parts (Avoid Costly Sink Marks) Verified DFM proportions, corrected reference values, and a supplier checklist. So your ribs add stiffness, hold tolerances, and mold clean on the…

A $1,500 injection mold from China is usually real, not a scam, but it is almost never the “full hardened mold rated for 500,000 shots” the quote implies. At that price you are buying a soft-steel insert (P20 or 718)…

Injection Molding Design Guide 7 Costly Reasons Why Uniform Wall Thickness Matters in Injection Molding Why Uniform Wall Thickness Matters in Injection Molding: cut defects, tame warpage, and lower your price per part. A buyer’s guide. DFM Fundamentals Warpage Prevention…

Injection Moulding · DFM Guide Draft Angle Rules That Save Your Tool Real angle ranges, the texture math, and the ejection traps that quietly kill yield — written for buyers who sign off on tooling. 0.5°–2°standard range 0.25°mirror min. 1°…

Injection Molding Engineering Guide Gate Location in Injection Molding: How It Affects Appearance, Strength, and Cost Pick the wrong gate spot and you’ll pay for it twice — once in scrap, once in tool rework. This guide is for buyers…