Tag Archives: manufacturer

Prototype? Cast Urethane is Ideal

Injection molding is great for high volumes, but when it comes to small runs, what you really need is a cast urethane process. That's what makes it ideal for prototypes. Cast urethane processes are fast and cost-effective so whether it's the medical equipment industry or robotics, a durable plastic component can be made quickly at a...
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Why Our ISO 9001:2008 Certification Matters

Those in the manufacturing industry are familiar with the importance of being ISO certified, but sometimes even people within manufacturing and other lines of business aren't clear on what that certification means and why it's important. We're proud to be ISO 9001:2008 certified because this proves we have met a valuable set...
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The Harkness Team is Here for You

Wondering if the team at Harkness can handle your needs? We absolutely can, but it may not be for the reasons you think. This diverse team comes with a wide range of interests and although, at first glance, they may not seem to be related to your needs, with a bit of extra thought it...
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The Capabilities of Custom Urethane

Urethane's unique physical properties allow it to be molded into thousands of custom parts. Because of it's abrasion resistance, high load capability, and superior dynamic properties, Urethane is the perfect material for creating custom parts. When creating sometimes intricately designed custom shapes, urethane will begin as a rod, tube, sheet or bar. This shape is...
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The Pros and Cons of Cold vs. 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...
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The Harkness Standard For Urethane Shapes

Harkness Industries’ cast urethane shapes (sheet, tube, rod and bar) are well known for their extraordinary toughness, durability, and consistent quality. Our MP Series product line will improve service life by 10 to 20 times versus that of conventional rubbers and plastics. In the toughest abrasion environments, urethanes will outlast hardened steel by...
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A Guide To Machining Polyeurethane

Cast polyurethane can be readily turned, sawed, drilled, ground or milled. These and other secondary operations present many similarities to the machining of metal, but there are also some important differences. This following information is intended to provide some general guidelines for machining urethanes. See Also: The advantages of injection molding It is important to note that the material...
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The Advantages of Custom Injection Molding

The injection molding process has several advantages over other molding processes. It allows for the fast production of plastic parts with reduced waste and at low cost. The following is a short list of what you can expect from utilizing Injection Molding as your form of production.
  • Injection molding allows for high production output...
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Rethinking Mass Production: How 3D Printing Is Changing Manufacturing

How can 3D printing help change the way we think about mass production and injection molding? How is helping change the way we think about prototyping and creating new ideas? Here we look at the basic tenets of mass production and how technology is changing the marketplace. It’s a basic tenet of mass production: Making things...
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Why Does Colour Vary in Natural Polyurethanes?

Natural polyurethanes vary from a light tan (almost yellow) to a medium-dark amber (almost greenish). This variation is noticed from supplier to supplier, and even within a given supplier’s production. Black or other colored (pigmented) polyurethanes do not typically exhibit this variability in color. It is important to note that these color variations...

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