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Custom Plastic Injection Molding

Crescent Industries has been providing custom injection molding for over 75 years for a wide range of industries and product applications. With our tonnage range of 50 tons to 385 tons and vertical injection molding capabilities, we have strategically invested to provide you with custom molded plastic parts and solutions for your supply chain.

  • Decoupled Molding

  • Kitting & Packaging

  • Engineering Design & Development

  • In-House New Tool Builds

  • ISO 13485:2016 Certified, FDA & ITAR Registered

  • Plastic Part Decoration

GE Servo Housing

Whether it’s a simple product design or a complex assembly using our internal robotics and hand-assembly, we have custom injection molding capabilities to fit your requirements and your supply chain expectations.

Scientific Injection Molding

The Scientific Approach

Utilizing our Scientific Injection Molding Principles, SPC and decoupled molding process, our focus is to provide you with a robust injection molding process to produce the highest level of quality components and devices. This begins in the early stages in our Design For Manufacturability (DFM), and optimized using our in-process inspection criteria with high-end measurement equipment.

Offering a complete custom manufacturing solution...

  • Kitting & Assembly

  • Automation

  • In-house Mold Builds

  • Product & Tooling Design

  • Quality Control

  • Process Development

Sampling of our Custom Injection Molding…

Custom Injection Molded Part Design Guidelines

If you need custom plastic injection molded parts, chances are good we’ve got you covered. Every part design is unique, but not the elements that need to be considered for overall quality and manufacturing of your custom plastic component or device. 

Crescent Industries' engineers have 100+ years of combined experience in injection molding, with extensive knowledge of part designing, mold designing, part fill simulation and material expertise to help guide you during the design phase.

Receive Custom Injection Molded Part Design Guidelines


  • Aerospace

  • Industrial

  • Electronics & Electrical

  • Safety

ITAR injection molding
CI ISO 13485 2016 Logo
FDA Registered injection molder

We know quality and precision are key for each component. For that reason, we have on-site, dedicated personnel and equipment to perform part inspections for final product success, ensuring that our plastic injection molding processes meet all necessary requirements. At Crescent Industries, we draw on our deep expertise to take on your complex part design at any step of development — from concept to production — and are able to assist with design, engineering, manufacturability, secondary processes and more.

Our extensive experience in development and production of custom injection molded components has given us a deep understanding of what makes a successful process.  Benefits of Crescent Industries' custom injection molding include:

Engineering- and technology-focused personnel: Our engineers take a scientific approach to design and engineering, ensuring efficiency, quality, and results.

A versatile suite of capabilities: We offer a number of other services to assist you in every step of development — 3D printing for prototypes and testing, plastic injection molding for products requiring both plastic and metal components, kitting services to aid in finishing and fulfillment, and value-add services such as finishing, assembly and packaging.

Manufacturability expertise: In bridging the process from design to production, manufacturability is a key concern in ensuring quality and efficiency during production. Our engineers take design for manufacturability into account throughout the entire process and can work with you to apply these best practices to your product. Factors include mold design, material selection, production time, process choice, and more.

Process flexibility: Whether you are completing all production processes under our roof, or need components or products sent to another supplier, we are ready to assist you in any way we can. Whether for the full design and engineering cycle or just for a certain aspect of production, our expertise is available to make your product the best it can be.


  • Device Assembly

  • Product Packaging

  • CNC Machining

  • Laser Engraving

  • Pad Printing

  • Ultra-Sonic Welding

  • EMI or RFI Shielding

  • Heat-Staking Inserts

  • Solvent or UV Bonding

  • Ultra-Sonic Cleaning

  • Cap-Lining

  • Annealing

  • Vacuum/Pressure Testing

  • Sterilization

  • Silk Screening

Engineering Expertise

With our continued investments into engineering resources, our team has the expertise and technical knowledge to assist with your products across various stages and complexity. We love to get involved in the earliest stages of product development to make sure that our customers have the plastic engineering expertise avoiding any costly hiccups in the development process.

We work directly with our customers’ engineering teams, providing guidance on the manufacturability of parts ready to be custom injection molded or to create a mold design with the proper actions, gate locations, temperature control and venting. Our expertise and experience with injection molding for pharmaceuticals and medical devices and components mean that we can provide knowledge and assistance that other providers cannot.

By utilizing Sigma Soft mold fill simulation software, we complete a 3D simulation of how the mold fills, packs and cools during the injection molding process as part of our DFM analysis process. Therefore, problems or concerns can be solved before the parts or mold are even produced.

Engineering Expertise
75+ Years of Manufacturing Solutions

Through Engineering, Experience & Excellence…

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