Comprehensive Tools & Training in Scientific Molding Techniques

RJG is a recognized international leader in injection molding training, technology and resources. If you are a plastics parts processor, injection molding technician, molder, part designer, quality engineer or quality manager, RJG has the tools to reduce and eliminate your most frustrating challenges.

Fresh Tech Story

Rod Groleau founded RJG Associates in 1985, a training and consulting company, where he developed the concepts of in-mold rheology techniques, load sensitivity testing, and principles of rigorous mold tryouts and DECOUPLED MOLDING. In 2000, RJG released The eDART System™ - the plastics industry's first digital data acquisition platform with smart sensor technology - at NPE; demonstrated independent valve gate control system; began offering piezoelectric (as well as strain gage) sensors. RJG has expanded over the years, opening facilities France, Germany, Ireland, Mexico, and China as well as Woodstock, Georgia.

RJG has been responsible for many innovations in the plastics industry:

  • Scientific Molding seminar
  • Commercial strain gage cavity pressure sensors
  • eDART System™ - the plastic industry's first digital data acquisition platform
  • Master MolderSM and Tryout Shop Certification programs


3111 Park Dr
Traverse City , MI

Talent Search

A recognized leader in injection molding training, technology and resources, RJG looks for qualified trainers for eDART Systems, EDM Controls and injection molding.

RJG also looks for seasoned engineers to assist in technical development using advanced computer programming skills, such as C/C++ development, Java, Android OS and IOS development.

Examples of Products

eDART Control System

eDART Control System

The eDART System™ is the most comprehensive and powerful process monitoring and control system for plastic injection molding applications. It helps you gain control over the two greatest variables in injection molding: People and plastic. Today's eDART lets you tailor the technology to suit your needs. But all eDART configurations have one thing in common: They provide the tools you need to go from good to great.

Here are a few of the benefits of using the eDART System™:

  • Verify whether the right processes are running and running to template
  • Detect and contain short shots and other defects

Injection Molding Training

Injection Molding Training

Helping Molders Succeed is more than a tagline; it's our company's sole focus. Training injection molders is an integral part of our mission, and it's something we do with great pride and dedication.

RJG makes it easy to train, whenever and wherever it's best for you:

  • At our state-of-the-art training facilities in Traverse City, Michigan, USA and Woodstock, Georgia, USA
  • At your own facility (in-plant training or consulting services)
  • At a conference center near you
  • Via the Internet (instructor-led)