Plastic Injection Molding 101 - Costs of Manufacturing a Mold

A common question for designers and engineers is “How much will a plastic injection mold cost?”  It makes sense. Injection molds represent the greatest expense in upfront production costs. And, there are many factors that go into determining the cost. With any custom injection molding project, your injection molder will be able to give you the final price tag.

In this article, we will review the variables that can impact the cost so that you can be better informed in making a mold purchasing decision. 

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The Heavy Truth about Injection Molds

Seven hundred pounds of hardened stainless steel. That’s the average weight of an injection mold. Some can weigh over a ton, some just a few hundred pounds, but any way you slice it, you certainly wouldn’t want one to fall on your foot.

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A Well-Designed Injection Mold Leads to Manufacturing Success

In our first installment in this series of articles on how to make a quality custom plastic part, we discussed the design factors you need to consider when developing your product.  Designing for manufacturability is the first step in making a high-quality part.  In this article, we focus on building and testing a plastic injection molding tool.

Building a plastic injection molding tool

A perfect, precision part begins with the mold.  Building the tool takes time and a great deal of accuracy.  It can also represent the largest investment in the manufacturing process, so getting it right is critical to the success of a project.  If your goal is to manufacture parts with a high degree of precision in large-volume, the tooling becomes even more complex.

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Plastic Part Design and Manufacturability

There are four key factors that go into making a high-quality plastic injection molded part: part design, tool building, material selection and manufacturing.

In this article, we will start at the beginning of the process, with the part design.

The process of plastic injection molding is designed to produce precision parts at a low cost.  The part design must be developed to maximize the efficiency inherent in high-volume molding.  With the right design, parts can be made consistently and with quality.  Without a good design, costly processing mistakes can be made.

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2014 Top Articles on Plastic Injection Molding

The Rodon Group was busy in 2014 providing information to help companies make better decisions about their plastic manufacturing.  With nearly 80 articles on our blog post, we covered a lot of territory.  

So, we thought we would take a moment to highlight our top sellers; the articles that got the greatest response from our readers.

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Injection Molding Machine Basics

If you are planning to manufacturer plastic parts, there is some basic information you should know about injection molding machines.  This article provides an overview of tonnage and clamping force.  We hope you find this information useful.  If you have specific questions, please do not hesitate to contact us.

Injection Press Basics

While plastic injection molders will help you determine the size of the machine needed to get the best result, a project designer or engineer can get a good estimate based on some basic information.   By knowing approximately what size machine will be required, you can better source a plastic injection molder that will meet your needs.

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The Pros and Cons of Cold Versus Hot Runner Molds

Every plastic part starts in a mold.   Molds are classified into two main types, cold runner and hot runner.  Each has its advantages and disadvantages.   Your plastic injection molder will be able to give you the costs and benefits of using these different systems.  However, by understanding the key differences of these technologies, you can have a more educated discussion on the type of mold that would best fit your project. 

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Material Requirement Planning system improves manufacturing efficiency

Like many companies, The Rodon Group recognizes our customers are our most valuable asset.  We pride ourselves on the ability to develop end-to-end manufacturing solutions that meet their demands on time, every time.

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An Introduction to Plastic Injection Molding

Next week, we will launch our new eBook “An Introduction to Plastic Injection Molding.” This resource guide contains information (more than 40 pages) to help designers, engineers and purchasing professionals navigate the world of plastic injection molding. Our goal is to make our customers more knowledgeable about what goes into making a plastic part.  It is written to provide a basic understanding of the presses, the processes and the cost factors involved in manufacturing.  

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