P Tsarehradsky, Author at Xcentric Mold & Engineering

Author: P Tsarehradsky

Undercuts in Your Injection Molded Part

June 20, 2018

What is an Undercut An undercut is any indentation or protrusion that prohibits part ejection from a mold. An undercut is a feature that cannot be capture with the cavity and core alone. It is die-locked which prevents the part from being ejected from the cavity. Undercuts can be used to carry out complex forms […]

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Overmolding for Plastic Injection Molding

June 19, 2018

What is Overmolding Overmolding is a two-shot injection molding process that creates a single part by combining two separate but complimentary thermoplastic materials. The first shot, called the substrate, is usually composed of a more rigid plastic and is designed to accept the second shot, called the overmold. The overmold is typically composed of a […]

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Material Considerations for the Medical Industry Utilizing Injection Molding

June 18, 2018

Materials for medical and the healthcare industry must meet more stringent criteria than perhaps other industries as there are regulations that mesh with required performance criteria for various healthcare applications. This document provides insight to regulations, known material performance criteria, and related medical/healthcare considerations that should be considered when applying materials to an injection molding […]

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Plastic Injection Molding Best Practices

June 7, 2018

High quality, efficient tooling relies heavily on good part design as well as advanced skills in mold design and the manufacturing of the tool.  An injection mold is a highly precision tool that must be rugged enough to withstand hundreds of thousands of high pressure molding cycles. By optimizing your part design and focusing on […]

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Choosing Between 3D Printing and Injection Molding Processes

June 6, 2018

The advancement in manufacturing processes is creating an opportunity for the design engineer to manage projects more effectively and produce higher quality parts. It is also true that with more processes to select from, there are more questions as to which process should be used and for what purpose. Engineers are building their own roadmaps […]

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Leveraging Mold Flow Analysis for Injection Molded Parts

June 5, 2018

When using Injection Molding as a process to manufacture your part, many aspects impact whether or not your injection molded part can actually be produced. Factors may include Fill Time, Plastic Flow, Confidence of Fill, Quality Prediction, Orientation of Skin and Skin Marks, Air Traps, and Average Temperature. To produce your part with a higher […]

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Threads in Your Injection Molding Project

May 30, 2018

Injection molded threads allow you the ability to fasten your plastic parts to other components securely with relative ease. Adding molded threads to your plastic part design can increase parts functionality but if not carefully designed can add unforeseen costs into the manufacturing process. Threads are created from the geometry of the mold cavity. As the […]

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Polymers Best Suited for Injection Molding

May 22, 2018

Most polymers may be used for molds including all thermoplastics, some thermosets, and some elastomers. There are thousands of different materials available for injection molds and that number is increasing every year. The materials can be mixed with alloys or blends of previously developed materials. This allows you to choose from a variety of materials […]

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The Impact of Improper Draft on Injection Molded Textured Finishes

April 23, 2018

Draft angles allow for the removal of plastic from an injection mold. Applying the proper draft angles (or tapers) on the surface of an injection molded part is critical to part moldability. If not dealt with properly, improper draft can lead to sticking, breaking, textured finish imperfections and a variety of other issues causing manufacturing delays. […]

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Poor steel condition can cause delays.

April 17, 2018

Poor steel condition can cause tooling and time-to-market delays. We find that poor steel condition is a design issue that’s not often thought of in injection molding. Custom part complexities can stress steel that is not rigid enough to hold its form causing breaks. The more complex the injection molded part with thin wall thicknesses […]

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