While computers handle many processes in plastics molding, extrusion, and manufacturing, the relationship a plastics company has with is customers is one of the most important aspects of the job. It is the key to our success at Harkness Industries. We focus on building relationships before we make a sale. When we fully understand your reasons...Read more
Cast Urethane is known for its roughness, durability, and quality. Here’s what you need to know about our standard urethane products.Read more
- Cast urethane products improve service life. Our MP Series product line, for example, can improve service life 10-20x when compared to conventional rubber or plastics. Urethanes also outlast hardened steel by 5-1!
- Stock shapes...
Machining metal and plastics are similar some aspects, but each have unique properties where it differs. In Part 1 of our guide to machining cast polyurethane elastomers, we look at 4 machining techniques: sawing, turning, facing, and boring: Sawing: We’ll most often use a band saw for cutting urethane because the long blades run cooler, and...Read more
Atlanta High Museum is currently holding it's MERRY GO ZOO exhibit. MERRY GO ZOO is an interactive art display that is basically a polyurethane display. "Inspired to create a playful, twenty-first-century version of an outdoor public sculpture, Hayon has designed four large-scale, vibrantly colored, kinetic structures for Merry Go Zoo. Visitors can interact with the structures either by spinning on...Read more
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,...Read more
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...Read more
While casting provides the products you need, sometimes secondary machining activities are required in order to get the polyurethane elements into just the right place and in the right working order. Hard urethanes (90 Shore A and up) are fairly easy to machine. The key is to rely on a plastics expert who understands the machinability...Read more
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...Read more
One of the properties of polyurethane that makes it so incredibly popular and versatile is the range of hardness it exhibits. Whether hard as rock or eraser soft, this material can be formed and molded into nearly limitless shapes while delivering the right amount of hardness for the application. While rubber can be...Read more
Which material is better? As with most material selection questions, the answer is "it depends". Both materials have their place but which material is actually superior? In the case of tires, seals, and some belts, rubber is the best material. In the case of bushings, spacers, and high load components, polyurethane is the better choice. Read more