---
title: Engineering and 3D Prototypes | Stelray Inc.
description: As a full service plastic injection molding company, we offer a number of product design, engineering services and material options to help develop, validate form and function of your part for successful plastic injection molding.
---

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[ sales@stelray.com](mailto:sales@stelray.com) [ +1(800) 735-2331](tel:1(800)%20735-2331)

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    - [Engineering and 3D Prototypes](https://www.stelray.com/plastic-part-design-engineering-services)
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- [Home](https://www.stelray.com)
- [About Us](https://www.stelray.com/who-are-we)
  
  Show submenu for About Us 
  
    - [Who We Are](https://www.stelray.com/who-are-we)
    - [Sample Projects](https://www.stelray.com/plastic-injection-molding-sample-projects)
- [Our Services](https://www.stelray.com/plastic-injection-molding-services)
  
  Show submenu for Our Services 
  
    - [Injection Molding Services](https://www.stelray.com/plastic-injection-molding-services)
    - [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding)
    - [Post Mold Services](https://www.stelray.com/injection-molding-secondary-decorating-services)
    - [Mold Making Services](https://www.stelray.com/custom-injection-mold-making-services)
    - [Engineering and 3D Prototypes](https://www.stelray.com/plastic-part-design-engineering-services)
    - [Medical Injection Molding](https://www.stelray.com/medical-injection-molding)
    - [Ultrasonic Welding Service](https://www.stelray.com/ultrasonic-welding)
- [Blogs](https://www.stelray.com/blog)
- [Reference Tables](https://www.stelray.com/reference-tables)
- [Careers](https://www.stelray.com/careers)
- [Contact Us](https://www.stelray.com/contact)

# Engineering and 3D Prototypes

## Experience innovation brought to life through our cutting-edge engineering and 3D prototyping solutions

[Precision Mold & Tool Making Service](https://www.stelray.com/custom-injection-mold-making-services)

[Secondary Operations Service](https://www.stelray.com/injection-molding-secondary-decorating-services)

[Precision Injection Molding Service](https://www.stelray.com/plastic-injection-molding-services)

[Quality Assurance Service](https://www.stelray.com/quality-control-plastic-injection-molding)

## Part Design and Engineering for Plastic Injection Molding

At Stelray Plastic Products, Inc., we are often asked to assist in the plastic part design development and prototyping of new product ideas for our customers. If “speed to market” is your concern, Stelray's in-house 3D printing services can be the interim solution. As a full-service injection molder, we offer a number of product design, engineering services and material options to help develop, validate form, fit, and function of your part for successful plastic injection molding.

Whether you need two parts or 2,000,000 parts, Stelray can accommodate your plastic injection molding requirements. Allow us the opportunity to consult with you and we will recommend the best tooling and material options to meet your needs.

![Thales parts - Secondary](https://www.stelray.com/hs-fs/hubfs/Thales%20parts%20-%20Secondary.jpg?width=2000&height=1333&name=Thales%20parts%20-%20Secondary.jpg "Thales parts - Secondary")

![Blog Photo 6-24-24](https://www.stelray.com/hubfs/Blog%20Photo%206-24-24.jpg "Blog Photo 6-24-24")

## Engineering & Development Services

- Product Testing
- Material Testing and Validation
- Early stage engineering support
- [Quality requirement planning](https://www.stelray.com/quality-control-plastic-injection-molding/)
- [Material Selection consultation](https://www.stelray.com/blog/choosing-the-right-plastic-resin-for-your-injection-molded-plastic-parts-6-important-considerations)
- Mold concept planning

## Rapid Prototyping

- 3D Printing – Leading edge “Additive Manufacturing” Quick way for your CAD model to become a physical part
- Injection Molded Prototypes
- Stereolithography (SLA)-functional 3D model for initial review of our design concept
- CU Models (Cast Urethane)
- CNC Machined and fabricated models – Best use if a 3D CAD model is not available and for fabricating a specific shape from a specific material
- [3D printed mold core & cavity blocks](https://www.stelray.com/blog/stelray-adds-3d-printed-tooling-services)
- **[Off-Shore Mold Building Alliances](https://www.stelray.com/custom-injection-mold-making-services//)**
- Low-cost injection molds

![DSC_0241](https://www.stelray.com/hs-fs/hubfs/DSC_0241.jpg?width=2000&height=1342&name=DSC_0241.jpg "DSC_0241")

![shutterstock_1657585516-cropped](https://www.stelray.com/hs-fs/hubfs/Stelray%20Website%20Optimzation%20202401/shutterstock_1657585516-cropped.jpg?width=1334&height=1334&name=shutterstock_1657585516-cropped.jpg "shutterstock_1657585516-cropped")

 

## Plastic Part & Mold Tool Design

- [Configuring part for consistent production](https://www.stelray.com/blog/draft-angles-in-part-design-for-plastic-injection-molding)
- Considerations in designing are reducing cycle time and minimizing defects
- Consideration for family molds to reduce part cost
- Assist with surface finish requirements
- Refine 2D or 3D CAD models
- Wire EDM technology
- Use of Mold-Tech texture or high speed polish SPI

## Material Selection

- [Choose resin and additives based on application](https://www.stelray.com/quality-control-plastic-injection-molding)
- Review thermal, mechanical and environmental properties
- Consultation for material reaction to fluids or solvents
- Consideration of cosmetic appearance
- Strength and flexibility of a material choice
- [Biodegradable options](https://www.stelray.com/blog/biodegradable-resins-for-plastic-injection-plastic-molding-0)

![Injection Molded Plastic](https://www.stelray.com/hs-fs/hubfs/iStock-186803820.jpg?width=2000&height=1333&name=iStock-186803820.jpg "Injection Molded Plastic")

Need Plastic Engineering Assistance?

### Fill out the form for no-obligation consultation

### Stelray Plastic Products, Inc.

Address: 50 Westfield Ave., Ansonia, CT 06401

Phone: [+ 1 (800) 735-2331](tel:0444486534)

Email: [sales@stelray.com](mailto:sales@stelray.com)

[Follow us on Facebook](https://www.facebook.com/StelrayPlasticProducts/) [Follow us on LinkedIn](https://www.linkedin.com/company/stelray-plastic-products/)

### Stelray Blogs

- [A Great Past: The History of Plastic](https://www.stelray.com/blog/a-great-past-the-history-of-plastics)
- [Resilience: The Story of Stelray](https://www.stelray.com/blog/the-story-of-stelray)
- [Critical to Quality: Caring for Your Injection Mold](https://www.stelray.com/blog/critical-to-quality-caring-for-your-injection-mold)

### Pages

- [Contact Us](https://www.stelray.com/contact)
- [Reference Tables](https://www.stelray.com/reference-tables)
- [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding)

- [Contact Us](https://www.stelray.com/contact)
- [Reference Tables](https://www.stelray.com/reference-tables)
- [Quality Control](https://www.stelray.com/quality-control-plastic-injection-molding)

![Stelray certified by the FDA for Current Good Manufacturing Practice (CGMP)](https://www.stelray.com/hs-fs/hubfs/Stelray%20Website%20Optimzation%20202401/quality-certifications/GMP-footer-118x100px.jpg?noresize&width=118&height=100&name=GMP-footer-118x100px.jpg) ![ISO-9001 (002)-1](https://www.stelray.com/hs-fs/hubfs/ISO-9001%20(002)-1.png?noresize&width=963&height=1187&name=ISO-9001%20(002)-1.png) ![Stelray certified by the FDA as a Registered Medical Device Manufacturer](https://www.stelray.com/hs-fs/hubfs/Stelray%20Website%20Optimzation%20202401/quality-certifications/FDA-footer-118x100px.jpg?noresize&width=118&height=100&name=FDA-footer-118x100px.jpg)

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