Tag Archives: urethane molding

New Gaskets for Old Equipment

Finding parts for old equipment can be difficult or even impossible depending upon the age. So when a machine is still capable of years of performance yet a gasket goes that can't be found the answer is to get a new one custom made to continues the life of the equipment. At Harkness Industries,...
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High Volumes, Minimal Waste with Injection Molding

In previous posts, we've mentioned that injection molding is very efficient for large production numbers, but just how it's so efficient is often a mystery to those outside of the industry. It begins with the mold itself. When we get specs from a client, we ensure our molds are absolutely precise to reduce the...
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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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Molding – Understanding the Difference Between Injection and Cast

Your project is unique to your needs and determining which process to use comes down to a few key differences in the production processes between urethane cast molding and injection molding. First, let's consider the similarities: Both processes allow for a multitude of colors, soft or rigid durometeres and the ability to "wrap" or cast around...
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Exciting Changes at Harkness

There are a number of exciting changes at Harkness we're pleased to share: Introducing two new member to our team; Gregg Hamel and Taegan Williams. Our new Senior Manufacturing Engineer, Gregg Hamel, joined us at the end of March to support custom urethane manufacturing and product development. With a Bachelor of Science degree in Chemical Engineering, Gregg...
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Harkness February News Update

We hope your February is off to a great start. We have a few exciting updates to bring you this month, so let's get to it! First, we would like to welcome Tim Emerson to the team as our Controller. Tim brings with him experience in strategic planning, operations management, as well as financial analysis and...
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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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