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Midstate Mold & Engineering

Precision Plastic Injection Molders

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What is the Difference Between Overmolding and Insert Molding?

A screwdriver created via insert molding with a black and yellow handle next to screws on a wooden table.

Plastic injection molding embodies numerous subsets of versatile manufacturing processes. Two distinct methods of plastic fabrication include overmolding and insert molding, each offering its own advantages. Insert molding is the process of molding plastic over an entirely different material, and overmolding is a method that adds a layer of material over an existing part. Though, this is not where their differences end. Let’s take a more in-depth look at the difference between overmolding and insert molding.

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The 3 Common Mistakes in Designing Products for Injection Molding

White plastic spur gears interconnected in black, plastic housing designed through plastic injection molding.

Injection molding is the most common manufacturing process, and businesses are eager to start projects using affordable and durable polymers. However, due to the intricacies involved in plastic injection molding, engineers need to carefully consider how they design their parts to ensure maximum part performance and reduced tooling costs. When a business’s engineers take it upon themselves to make an injection mold without the consultation of injection molding specialists, errors are sure to arise. Let’s review three of the common mistakes in designing products for injection molding.

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Rapid Part Prototyping: Why to Include Manufacturers During Design

Hands holding a black prototype part for toy on a yellow background, inidcating a part make with rapid part prototyping

The act of prototyping is typically performed to test various part designs to create the best product, and sometimes it’s required to show multiple design elements to prospective investors. Regardless, prototype development is integral to the plastic injection molding process, as the final product should mirror the designer’s image. However, there are often time constraints on part manufacturing, so individually prototyping different molds can be wasteful. That’s where rapid part prototyping comes in to play.

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