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Article

Living Hinge Design: How to Design a Living Hinge

A living hinge is a thin, flexible strip made from the same material as the connected parts, designed to let them bend or rotate without additional hardware. They are low-cost, easy to manufacture, and have little wear or friction involved in operation. But while the idea is simple, the execution can be more complicated. Living […]

Article

Injection Molding Design Guide: Best Practices for Molded Plastic Parts

The Injection Molding Design Guide and all information in this article is available as a free e-book download. Download the Injection Molding Design Guide  Injection molding design focuses on creating plastic parts that can be manufactured efficiently while maintaining strength, quality, and consistency. By following key design guidelines—such as proper wall thickness, draft angles, rib […]

Article

GD&T Basics with Examples: A Guide to Geometric Dimensioning and Tolerancing

Geometric Dimensioning and Tolerancing (GD&T) is a standardized system for defining and communicating engineering tolerances using symbols, datums, and feature controls. It enables engineers to precisely specify allowable variation in part geometry—ensuring proper fit, function, and manufacturability. By replacing ambiguous coordinate tolerancing with a clear, rules-based framework, GD&T improves communication between design, manufacturing, and quality […]

Article

Understanding the Types of Fit in Engineering: Clearance, Transition, and Interference

In engineering, the term “fit” describes the relationship between two mating parts, such as a shaft and a hole. The way these parts interact—whether they fit snugly together, move freely, or press into one another—is crucial to the performance and functionality of the mechanical system.  The correct fit ensures that parts function optimally, whether they […]

Article

Plastic Joining Methods: A Guide to Mechanical Fastener Options From Snap Fits to Adhesives

There are many ways to join or fasten plastic parts, and the right method depends on your design goals, materials, and production needs. Options range from simple mechanical fasteners like screws or inserts, to molded-in features such as snap-fits, to adhesives, welding, and other specialty techniques. Each comes with its own strengths in terms of […]

Article

9 Tips for Better Engineering Drawings that Save Time and Money

This article was revised by Tessa Axsom in September 2023 Even in 2023, with the rising popularity of model-based definitions, engineering drawings are still a great way to communicate design intent for CNC machined parts that require tight tolerances, material specifications, or other special requirements. That’s why many Fictiv customers in the robotics, aerospace, automotive, […]

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