Custom Injection Molding

For 70+ years, Crescent Industries has been a custom plastic parts manufacturer providing the most comprehensive solutions in custom injection molding to a wide range of industries and product applications. With our tonnage range of 35 tons to 385 tons and vertical injection molding capabilities, we have strategically invested to provide our customers with custom molded plastic parts and solutions to their supply chain issues.

  • Scientific Injection Molding & SPC

  • Kitting, Value Add, Robotics

  • Engineering Design & Development

  • In-House Tool Room

  • ISO 13485:2016 Certified, FDA, FFL & ITAR Registered

  • Swiss-Screw Machining

various Custom Molding Markets

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


The Scientific Approach

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


  • Medical

  • Pharmaceutical

  • Military & Defense

  • Dental

  • Aerospace

  • Industrial

  • Electronics & Electrical

  • Safety

International Traffic in Arms Regulations logo
ISO 13485 Certified
Federal Arms License logo
Food and Drug Administration logo

Part Design Guidelines

The “Injection Molded Part Design Guidelines” will review items to consider when designing your next plastic component like:

  • Maintaining uniform wall thickness to minimize sinking, warping and improve mold fill.
  • Using generous radius at all corners to avoid sharp corners that increase stress concentration which can lead to part failure.
  • Incorporating sufficient draft angles for easy removal of the part from the mold.

Mold Design Guidelines

Crescent Industries’ mold design engineers look at the aspects of the part that are important for injection molding. Adherence to these design principles and best practices at the beginning of the design process will ultimately lead to better overall quality of parts during manufacturing. These “Mold Design Guidelines” will evaluate items like the follow:

  • Gate Designs / Runner Designs
  • Cooling / Venting
  • Actions
  • Mold Filling

70+ years providing extensive capabilities…

  • Scientific Injection Molding

  • 3D Printing (Additive Manufacturing)

  • Mold Flow and DFM Analysis

  • Kitting, Assembly & Value Add

  • Swiss-Screw Machining

  • In-house Tooling Capabilities

  • Product & Tooling Design

  • Quality Control

  • Product Development

Sampling of our Molding…


  • 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.

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 is generated as part of our DFM analysis process. Therefore, problems or concerns can be solved before the parts or mold are even produced.


70+ Years of Manufacturing Solutions

Through Engineering, Experience & Excellence…


Inserts can be molded into a diverse range of critical plastic components. These components can be used in housings, instruments, knobs and electrical components. Which can be utilized in the medical, defense, aerospace, electronics/electrical, industrial and consumer markets.

  • Magnets

  • Screws

  • Studs

  • Contacts

  • Spring Contacts

  • Surface Mount Pads

  • Rivets

  • Threaded-Fasteners

  • Clips

  • Pins

  • Bushings

  • Tubes