Injection Molding

Career‑Focused Plastics Workshops

Student and teacher are looking at computer for injection molding.

Join us for a series of intensive workshops on plastics. You will learn polymer science, plastic processing, machine operation and much more. These workshops will prepare you to enter many high-paying jobs in the plastics industry or help you advance your current career. You’ll gain exposure to potential employers with great-paying job opportunities and receive hands-on and classroom training.

Register for Molding Workshop Classes

Available Classes

March 31 – April 2, 2026

North Education Center, Room 973
Time: 8 a.m. – 5 p.m.
Cost: $2,045
Trainers: Craig Potthast and Karl Anderson, RJG Qualified Trainers for CCC

What is Fundamentals of Systematic Molding?

Fundamentals of Systematic Molding is the foundation for all RJG training sessions.

Through a combination of classroom instruction and interactive machine investigations, students completing the course will have a better understanding of how to develop a machine-independent process, how to make data-driven improvements to existing processes and how to effectively troubleshoot using scientific and systematic approaches to plastic injection molding.

Is Fundamentals of Systematic Molding for Me?

Fundamentals of Systematic Molding is designed for everyone working with injection molding. By training engineers, managers and support staff, the whole facility can communicate effectively and operate more efficiently.

Topics we will cover:

  • Mold and part design considerations
  • The four plastic variables
  • The molding system
  • The molding problem, stated
  • Processing from plastic’s point of view
  • Introduction to instrumentation strategies
  • Molding Lab investigations of machine and process

Available Classes

No classes are currently scheduled.

North Education Center, Room 973
Time: 8 a.m. – 5 p.m.
Cost: $845
Trainers: Craig Potthast and Karl Anderson, RJG Qualified Trainers for CCC

What is Injection Molding Essentials?

Injection Molding Essentials provided a solid foundation for understanding the injection molding process and the critical practice of good production techniques. Participants learn the elements and variables involved in the injection molding process, as well as key terminology that will help them communicate and solve molding problems.

Is Injection Molding Essentials for Me?

Injection Molding Essentials is right for anyone new to injection molding or without formal education in polymer behavior.

Topics we will cover:

  • Nature and properties of plastics
  • Basic injection molding
  • The clamp, the injection unit and the mold
  • Elements of the cycle
  • Introduction of the four plastic variables
  • Economics of molding
  • Common quality defects and possible causes

Available Classes

May 5 – 7, 2026

North Education Center, Room 973
Time: 8 a.m. – 5 p.m.
Cost: $1,545
Trainers: Craig Potthast and Karl Anderson, RJG Qualified Trainers for CCC

This workshop is designed to provide students with valuable hands-on machine time to reinforce the methodologies they learned in Systematic Molding. It offers the same exercises as Master Molder® I, but with half the practice time and no testing.

Companies that are not allowed by their customers to make process changes can substitute the Template Match Workshop for the DECOUPLED MOLDING® Workshop.

Attendees will acquire the knowledge they need to dissect and rebuild the process using data-driven methodologies, then document the return on investment and identify potential areas for improvement based on the machine and mold’s current condition. The result will be the most robust process possible with the current conditions.

For those interested in using this training to achieve real-world process-improvement ROI, an RJG consultant may be hired later to mentor you on one or more machines at your facility.

Note: Because this is a public course, we cannot work with real-world process targets. An in-plant, ROI-driven version of the DECOUPLED MOLDING® Workshop is also available for groups of four or more students who have completed Systematic Molding. The last day includes a student report-out to management with ROI data.

Course Highlights

  • Machine qualification tests
    • Load sensitivity
    • Pressure response
    • Injection speed linearity
    • Dynamic Check Ring Repeatability Test
    • Clamp/Mold deflection study
  • Mold performance requirements and weakness identification
    • Pressure loss test
    • Perform a gate seal study to determine optimal hold time
    • Identify the cavity balance at all injection speeds
    • Create a temperature map of the mold
  • Validate machine and mold capabilities
  • Build and document a robust Decoupled process with the current machine and mold conditions

Course Prerequisites

Prior attendance at an RJG Systematic Molding or Fundamentals of Systematic Molding within one (1) year of the first day of the DECOUPLED MOLDING® Workshop is required.

It is strongly recommended that the participant has completed RJG’s Math for Molders eLearning course and has had hands-on machine experience prior to attending this course.

Available Classes

  • April 7 – 16, 2026
  • May 12 – 21, 2026

North Education Center, Room: 973
Time: 8 a.m. – 5 p.m.
Cost: $4,495
Trainers: Craig Potthast and Karl Anderson, RJG Qualified Trainers for CCC

This two-week, hands-on, machine-intensive training sets the standard for demonstrating applied knowledge of strategic plastic injection molding methods for an entry-level mold technician in a manufacturing setting.

Students will learn to apply injection molding methods and techniques from the plastics’ point of view. Students will be able to demonstrate the development of a Decoupled II process using the skills gained in this training, which can be applied immediately in industry.

Available Classes

April 21 – 24, 2026

North Education Center, Room 973
Time: 8 a.m. – 5 p.m.
Cost: $1,945
Trainers: RJG Instructor Cory Hoeppner

This four-day, hands-on, machine-intensive training sets the standard for demonstrating applied knowledge of strategic plastic injection molding methods for an entry-level mold technician in a manufacturing setting.

Students will learn to apply injection molding methods and techniques from the plastic’s perspective. Students will be able to demonstrate the development of a Decoupled II process using the skills gained in this training, which can be applied immediately in industry.

The registration fee includes interactive instruction, printed materials and breaks. Lunch is on your own. Courses with low enrollment may be canceled.

Contact

Cheryl

402-562-1425
877-222-0780, ext. 1425
Email Cheryl

Cancellation Policy

A notice of 21 business days is required to receive a full refund. Individuals unable to attend may delegate a substitute at any time prior to the workshop without penalty. Failure to attend, without notice of cancellation, will result in billing to you or your employer.