Interactive 3D Technology A virtual look at common injection molding defects. Learn more

As Manufacturing Engineer at Ford Motor Company I have worked with Kruse Analysis for several years and rely on Torsten for his experience and insight. The Kruse Training program takes what Torsten has learned in his years in the injection molding industry and helps new and veteran engineers expand their knowledge and become more well-rounded professionals.

Jeff Kloberdanz, Ford Motor Company

The Circle of Knowledge program highlights the key areas of molding fundamentals, materials, part, mold design, as well as processing. The Kruse Training program is a first-class training program and I look forward to continuing my plastics education with the Kruse Training team!

Michael Dalrymple, ALBA Enterprises

We have been using the Kruse Training program at Prestige Mold since it launched in 2018. I have worked closely with Torsten to ensure the content and delivery of the training materials meets our needs and am pleased with the results for our engineering group and the company overall.

Clinton Stark, Prestige Mold

I was able to do it from work, at my own pace. The graphics are excellent. The content was well thought out as it took me through the steps, from the very basic to advanced molding. I learned things that I never knew before.

Roger Sawyer, Aroplax Corporation

View all our topics and lessons

TOTAL LESSONS
81

Available Levels

1234

LESSONS COMING SOON!
12

Molding Fundamentals Lessons

Molding Machine Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 1

The Molding Machine
Temperature and Fill Speed Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 2

Temperature and Fill Speed
Wall Thickness and Injection Pressure Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 3

Wall Thickness and Injection Pressure
Switch Over From Filling to Packing Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 4

Switch-Over from Filling to Packing
Optimizing the Packing Profile Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 5

Optimizing the Packing Profile
Cooling Behavior Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 6

Cooling Behavior
Warpage Due to Differential Shrinkage Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 7

Warpage Due to Differential Shrinkage
Warpage Due to Differential Cooling Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 8

Warpage Due to Differential Cooling
Warpage Due to Fiber Orientation Thumbnail

Level 1 Molding Fundamentals
Inside the Mold

Lesson: 9

Warpage Due to Fiber Orientation

Polymer Materials Lessons

Polymer Materials Thumbnail

Level 1 Polymer Materials
Material Behavior

Lesson: 1

Polymer Material Overview
Viscosity Thumbnail

Level 1 Polymer Materials
Material Behavior

Lesson: 2

Viscosity
PVT Thumbnail

Level 1 Polymer Materials
Material Behavior

Lesson: 3

PVT
Thermal Properties Screenshot

Level 1 Polymer Materials
Material Behavior

Lesson: 4

Thermal Properties
Mechanical Properties Thumbnail

Level 1 Polymer Materials
Material Behavior

Lesson: 5

Mechanical Properties
Polymer Material Deformation Behavior Thumbnail

Level 1 Polymer Materials
Material Behavior

Lesson: 6

Deformation Behavior

Part Design Lessons

Part Design Nominal Wall Thickness Thumbnail

Level 1 Part Design

Lesson: 1a

Nominal Wall Thickness

Level 1 Part Design

Lesson: 1b

Nominal Wall Thickness
Part Design Flow Leaders Thumbnail

Level 1 Part Design

Lesson: 2

Flow Leaders
Part Design Flow Restrictors Thumbnail

Level 1 Part Design

Lesson: 3

Flow Restrictors
Part Design Rib Thickness Thumbnail

Level 1 Part Design

Lesson: 4

Rib Thickness
Part Design Rib Height Thumbnail

Level 1 Part Design

Lesson: 5

Rib Height
Part Design Rib Structure Thumbnail

Level 1 Part Design

Lesson: 6

Rib Structure
Part Design Corrugations and V-Grooves Thumbnail

Level 1 Part Design

Lesson: 7

Corrugations and V-Grooves
Part Design Bosses Thumbnail

Level 1 Part Design

Lesson: 8

Bosses
Part Design Gussets Thumbnail

Level 1 Part Design

Lesson: 9

Gussets

Mold Design Lessons

Mold Design-Gates Cold Sprue Thumbnail

Level 1 Mold Design
Gates

Lesson: 1

Cold Sprue
Mold Design Pin-Point Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 2

Pin-Point Gates
Mold Design Round and Oval Sub-Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 3a

Round and Oval Dual Sub-Gates
Mold Design Round and Oval Six-Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 3b

Round and Oval Six-Gate Sub-Gates
Mold Design Ejector Pin Sub-Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 3c

Ejector Pin Sub-Gates
Mold Design Edge Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 4

Edge Gates: Standard, Lapped, and Chisel
Mold Design Fan Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 5

Fan Gates
Mold Design Film Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 6

Film Gates
Mold Design Disk Gates / Diaphragm Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 7

Disk Gates
Mold Design Ring Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 8

Ring Gates
Cashew Gates Thumbnail

Level 1 Mold Design
Gates

Lesson: 9

Cashew Gates
Gate Symmetry and Balance

Level 1 Mold Design
Gates

Lesson: 10

Symmetry and Balance
old Design Cold Runner Types and Designs Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 1

Types and Designs
Mold Design Cold Runner Patterns Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 2a

Runner Patterns, Part 1
Mold Design Cold Runner Patterns Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 2b

Runner Patterns, Part 2
Mold Design Optimizing Cold Runner Sizes Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 3a

Optimizing Cold Runner Sizes, Part 1
Mold Design Optimizing Cold Runner Sizes Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 3b

Optimizing Cold Runner Sizes, Part 2
Mold Design Artificially Balancing Cold Runners Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 4

Artificially Balancing a Cold Runner
Mold Design Balancing Multi-Gated Runner Parts Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 5

Balancing Multi-Gated Runner Parts
Mold Design Balancing Family Molds Thumbnail

Level 1 Mold Design
Cold Runners

Lesson: 6

Balancing Family Molds
Cooling System Overview

Level 1 Mold Design
Cooling

Lesson: 1

Cooling System Overview
Temperature Behavior in Molds

Level 1 Mold Design
Cooling

Lesson: 2

Temperature Behavior in Molds
Parallel and Serial Coolant Circuits

Level 1 Mold Design
Cooling

Lesson: 3

Parallel and Serial Coolant Circuits
Dimensioning and Positioning Cooling Lines

Level 1 Mold Design
Cooling

Lesson: 4

Dimensioning and Positioning Cooling Lines
Baffle and Bubbler Circuits

Level 1 Mold Design
Cooling

Lesson: 5

Baffle and Bubbler Circuits
Mold Steel Selection

Level 1 Mold Design
Cooling

Lesson: 6

Mold Steel Selection
Thermal Pins

Level 1 Mold Design
Cooling

Lesson: 7

Thermal Pins

Processing Lessons

Nozzle Tip Designs and Injection Pressure Thumbnail

Level 1 Processing
Filling Phase

Lesson: 1

Nozzle Tip Designs and Injection Pressure
Pressure Behavior Thumbnail

Level 1 Processing
Filling Phase

Lesson: 2

Pressure Behavior
Temperature Behavior Thumbnail

Level 1 Processing
Filling Phase

Lesson: 3a

Temperature Behavior, Part 1
Temperature Behavior Thumbnail

Level 1 Processing
Filling Phase

Lesson: 3b

Temperature Behavior, Part 2
Optimizing Fill Speed Thumbnail

Level 1 Processing
Filling Phase

Lesson: 4

Optimizing the Filling Speed
Fill Speed Profiles Thumbnail

Level 1 Processing
Filling Phase

Lesson: 5

Fill Speed Profiles
Packing Pressure Profiles: Amorphous Materials

Level 1 Processing
Packing and Cooling Phase

Lesson: 1

Packing Pressure Profiles: Amorphous Materials
Packing Pressure Profiles: Semi-Crystalline Materials

Level 1 Processing
Packing and Cooling Phase

Lesson: 2

Packing Pressure Profiles: Semi-Crystalline Materials
Wall Thickness and Packing Pressure

Level 1 Processing
Packing and Cooling Phase

Lesson: 3

Wall Thickness and Packing Pressure
Polymer Flow During Packing

Level 1 Processing
Packing and Cooling Phase

Lesson: 4

Polymer Flow During Packing
Gate Seal Time

Level 1 Processing
Packing and Cooling Phase

Lesson: 5

Gate Seal Time
Clamp Tonnage

Level 1 Processing
Packing and Cooling Phase

Lesson: 6

Clamp Tonnage
Understanding Shrinkage and Warpage

Level 1 Processing
Shrinkage and Warpage

Lesson: 1

Understanding Shrinkage and Warpage
Understanding Flow-Induced Mold-in Stress

Level 1 Processing
Shrinkage and Warpage

Lesson: 2

Understanding Flow-Induced Molded-In Stress
Understanding Thermally-Induced Molded-In Stress

Level 1 Processing
Shrinkage and Warpage

Lesson: 3

Understanding Thermally-Induced Molded-In Stress
Amorphous and Semi-Crystalline Materials

Level 1 Processing
Shrinkage and Warpage

Lesson: 4

Amorphous and Semi-Crystalline Materials
Fiber-Filled Materials

Level 1 Processing
Shrinkage and Warpage

Lesson: 5

Fiber-Filled Materials
Fiber Percentage

Level 1 Processing
Shrinkage and Warpage

Lesson: 6

Fiber Percentage

Molding Defects Lessons

Short Shots Processing Thumbnail

Level 2 Molding Defects

Lesson: 1

Short Shots (Processing)
Short Shots Processing Thumbnail

Level 2 Molding Defects

Lesson: 2

Short Shots (Part Design)
Entrapments Thumbnail

Level 2 Molding Defects

Lesson: 3

Entrapments
Burn Marks Thumbnail

Level 2 Molding Defects

Lesson: 4

Burn Marks
Flash Thumbnail

Level 2 Molding Defects

Lesson: 5

Flash
Meld and Weld Lines Processing Thumbnail

Level 2 Molding Defects

Lesson: 6

Meld and Weld Lines (Processing)
Meld and Weld Lines Part Design Thumbnail

Level 2 Molding Defects

Lesson: 7

Meld and Weld Lines (Part Design)
Sink Marks and Voids-1 Thumbnail

Level 2 Molding Defects

Lesson: 8

Sink Marks and Voids, Part 1
Sink Marks and Voids-2 Thumbnail

Level 2 Molding Defects

Lesson: 9

Sink Marks and Voids, Part 2
Gate Blush and Halo Thumbnail

Level 2 Molding Defects

Lesson: 10

Gate Blush and Halo
Jetting Thumbnail

Level 2 Molding Defects

Lesson: 11

Jetting