Solving Design, Surface, and Manufacturing Challenges for the NEV Era In the electric vehicle (EV) era, the cabin has evolved into a “mobile living space.” With the absence of engine noise, occupants are more sensitive to visual defects, interior odors (VOCs), and fitment noises (NVH). Balancing Class A aesthetics, lightweighting, and cost-efficiency is now the…
Beyond Price: 5 Non-Negotiable Signs of a Reliable Injection Mold Factory In the global tooling market, a low quote is often a trap for hidden costs: production delays, excessive scrap rates, and premature mold failure. Choosing a “proper” injection mold factory isn’t just about finding a vendor; it’s about finding a partner who mitigates your…
What is Injection Molding Tolerance? Injection molding tolerance refers to the allowable variation in the dimensions of a plastic part during manufacturing. In simple terms, it defines how much a finished part can deviate from its intended design size while still being considered acceptable. Tolerances are critical in plastic injection molding because even small dimensional…
Injection molding is a manufacturing process used to produce plastic parts in large volumes with high precision and consistency. The process involves melting plastic material and injecting it into a custom-designed mold cavity, where it cools and solidifies into the final shape. It is widely used in industries such as automotive, electronics, medical devices, and…
Selecting the right engineering plastic is critical in automotive injection molding. Among commonly used materials, PA66 (Nylon 66) and PBT (Polybutylene Terephthalate) are widely applied in structural and functional automotive components. Although both are engineering thermoplastics, they differ significantly in heat resistance, mechanical strength, and dimensional stability. Heat Resistance Heat resistance is one of the…
Solving Cracking Issues in ABS Parts with Copper Inserts: A Root Cause Analysis Insert molding ABS with copper bushings is a common practice for creating durable threads in plastic parts. However, many manufacturers struggle with delayed cracking (stress cracking) around the metal insert, often appearing weeks after production. As a precision mold maker in Shanghai,…
Troubleshooting PPSU Injection Molding: A Technical Guide to Mold Design and Tooling PPSU (Polyphenylsulfone) is a “problem-solver” material for high-heat and sterile environments, but it is also notoriously difficult to process. Many manufacturers face high scrap rates due to stress cracking, material degradation, and dimensional drift. As a precision mold maker in Shanghai, CNMOULDING has…
EDM Machining for Injection Molds: Solving Deep Ribs, Sharp Corners & Mirror Finishes In high-precision injection mold manufacturing, certain geometries cannot be achieved with traditional CNC milling—such as ultra-deep ribs, sharp internal corners, and high-gloss cavities. Electrical Discharge Machining (EDM) is the critical process that enables these complex features. At CNMOULDING’s Shanghai facility, we combine…
