Plastic Parts

Nylon is a strong engineering plastic, but sometimes you need even more strength and stiffness. That is where glass-filled nylon comes in. By adding glass fibers to nylon resin, manufacturers create a material that handles higher loads and temperatures. It is widely used in automotive, industrial, and consumer applications where standard nylon falls short. In … Read more

When you need clear plastic parts, two materials often come to mind: polycarbonate (PC) and acrylic (PMMA). Both are transparent and can be injection molded. But they have very different properties. Choosing the right one affects strength, clarity, cost, and durability. In this guide, we compare polycarbonate vs acrylic for injection molding. You will learn … Read more

ABS is one of the most popular materials for injection molding. It is strong, tough, and easy to mold. Engineers and product designers choose ABS plastic for everything from car parts to toys. But what exactly is ABS? And how do you get the best results when molding it? This guide covers the properties of … Read more

How much does injection molding cost? It is one of the first questions buyers ask. The answer is not simple. Injection molding cost depends on many factors: mold complexity, material choice, part size, and volume. This guide breaks down each cost driver. You will learn how to read an injection molding quote, what questions to … Read more

Good parts start with good mold design. The mold is the heart of the injection molding process. A well-designed mold produces consistent, high-quality parts for millions of cycles. A poorly designed mold leads to defects, delays, and extra costs. This guide covers the key principles of injection mold design. You will learn about draft angles, … Read more

Choosing the right material is one of the most critical decisions in any injection molding project. The material you select determines not only the part’s mechanical performance and durability but also its cost, manufacturability, and long-term reliability. This injection molding material selection guide provides a systematic framework for evaluating options, comparing common plastics, and avoiding … Read more

Injection molding is the world’s most versatile manufacturing process for producing plastic parts at scale. From automotive components to medical devices, injection molding enables the creation of complex geometries with exceptional precision and repeatability. This comprehensive guide covers everything you need to know about plastic injection molding—from the step-by-step injection molding process to material selection, … Read more

Many plastic parts have features that cannot be molded with a simple open‑close mold. Holes on side walls, snap‑fit barbs, internal threads – these all need moving components inside the mold. That is where slides and lifters come in. A slide moves sideways to create an undercut, while a lifter moves at an angle to … Read more

A living hinge is a thin flexible section that connects two plastic parts, allowing them to bend repeatedly without breaking. You see them every day on shampoo caps, toolboxes, and medicine bottles. When designed correctly, a living hinge can last for thousands of flexes. But when designed poorly, it cracks on the first use. This … Read more

One of the most common questions from new designers is: why do plastic parts need a draft angle? The simple answer is that without it, parts stick in the mold and cannot be ejected. Injection molding draft angle refers to the taper added to vertical walls so the part releases cleanly from the mold. It … Read more