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Articles

To Achieve a Burr-free Surface Finish Takes Experience

Engineers and designers often ask questions regarding surface finish in plastic machining. Usually, they have had a negative experience working with a metal shop or realize that a good, burr-free finish is essential to the success of the product. With 30-plus years of experience, PEP Connecticut Plastics will produce, on average, a 32 finish for most components and materials. This includes more difficult soft materials such as polypropylene and UHMW-PE. Machining without burrs is a cornerstone of our success. The surest way to manage burrs in plastic is to not make them. Requirements for machined finishes below 32 are increasingly more […]

Precision Plastic Machining Provides Solution for Difficult Plastic Parts

A hallmark of PEP Connecticut Plastics is to find a way to produce plastic machined components for our customers, no matter what the challenge. From tight tolerances, difficult geometries, and unstable materials we push the boundaries of plastic machining to help our customers design some of the world’s most advanced equipment. Difficult parts are the showcase of production at PEP Connecticut Plastics. This group of components requires our engineers to go beyond traditional plastic machining techniques and learn new, innovative approaches. Please browse our photos here and in other galleries that are examples of our manufacturing capabilities.   These complex components […]

We recommend Delrin when superior strength and dimensional stability are critical to the design.

Connecticut Plastics, Inc. an industry leader in plastic fabrication, often recommends utilizing Delrin, sometimes called Delrin/Acetal, because of its ease in machining and fabrication.  Delrin is the crystalline thermoplastic of choice when precision plastic parts are required for impact and wear resistance in a wide range of industrial and mechanical applications.  With low, consistent internal stress, this material experiences little dimensional change during machining and use.  Delrin is also an ideal material for use in wet environments because it resists moisture.  Custom plastic parts made of Delrin are tough to wear out making Delrin the ideal choice for the following […]

Quality Plastic Machining Ensures the Best Results for Plastic Polishing.

Connecticut Plastics, Inc utilizes many methods to achieve optically clear finishes. The most common plastic polishing methods are vapor polishing, flame polishing, and mechanical buffing. Each process is best suited for particular configurations and materials. Our customers usually take our recommendations for the best plastic polishing method that will work with their application, and give them the best results. Flame Polishing uses a hot flame to flow a surface. Operator skill is critical with this method. When done properly, flame polishing produces the clearest finish, especially on acrylics. Flat external surfaces are the most applicable configuration for this method. Vapor […]

Teflon Has Highest Heat Resistance of all Fluroplastics

Teflon or Teflon/PTFE 7B is the most widely utilized material in its class.  PEP Connecticut Plastics utilizes Teflon for its exceptional mechanical strength, resistance to nearly all industrial chemicals and solvents and for its unique non-stick surface.  Teflon or Teflon/PTFE 7B has the highest heat resistance of all the fluoroplastics and retains its properties across an extensive range of temperatures (from -400°F  to 500°F) and under high load.   PEP Connecticut Plastics  has fabricated custom plastic components of Teflon or Teflon/PTFE 7B that were utilized in the following applications: seals, gaskets and bearings, tubes and wiring, hot plates, irons, bridge and […]

Plastic Machining vs. Plastic Molding of Components

Recently, Connecticut Plastics  exhibited at a device design show in New England.  At the show,  I could not help but notice how many engineers approached our booth and picked up our parts.  They were attracted by the various shapes, the colors, and the way the overhead lights shown off the many sharp angles that only precision machining can produce.  They each would turn the part over and over, show their companions, discuss among themselves, then every time, the visitor would look up and ask this same question: “Are these parts injection molded?”   “No, they are not,”  I’d reply, and […]

Think of Polycarbonate when Designing a Medical Device

PEP Connecticut Plastics, an industry leader in plastic fabrication, often recommends utilizing polycarbonate in a design because of its unbeatable strength.  Polycarbonate is known as a highly versatile, tough plastic that stands up in difficult environments.  This transparent material has a high modulus of elasticity without compromising its strength or structure.  Polycarbonate’s excellent electrical properties and low moisture absorption extend its viability for use in electronic applications.  For even more rigidity, polycarbonate can be reinforced with glass fiber.  Polycarbonate is also easy to machine, polish, weld and bond. Polycarbonate has the capacity to transmit 88% of light, making it ideal for windows and […]

Micro Machining of Polymer Components

PEP Connecticut Plastics is a world-class manufacturer of micro machined plastic components. We have the capacity to produce micro components, in large or small quantities, to customers’ specifications and hold to tolerances of +/- .0005 or better. When micro manufacturing plastic parts as small as .0005 in diameter, the parts can be smaller than the waste generated during machining. Here at PEP Connecticut Plastics, we contribute our success in this area to a unique approach: focus not only on the manufacturing process, but also on the handling, inspection, finishing and assembly of these exacting components.  Increasingly, our customers are asking […]

Consider a Precision Plastic Machined Component in your Design

Many efforts have been undertaken by OEMs to remove costs from their products. Converting metal components to plastic components in an application can result in significant reductions in costs, design changes, overall weight and waste. There exists a vast range of metal and plastic materials, where each one has a set of properties that are easily understood by designers and should be the first consideration when selecting the right material for any application. Metals are capable of maintaining their properties over a broad range of applications. Plastic parts are more susceptible to change under certain operating conditions. The key consideration […]

The True Definition of Value

The word “value” has been used in marketing vocabulary for many years. When an item is said to be of “value” it means that the product or service is “worth the money.” Customers could rest assured that they were getting a good product at a fair and reasonable price. This does not mean that expensive products have value and cheap products do not. It simply means that when an object or service is of value if it is worth the price you pay for it. But today in this recession economy the word “value” has taken on a new meaning. […]