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Fundamentals of Error Proofing: The Path Toward Zero Defects (Udemy.com)

The Concepts and Strategies You Need to Start Implementing Error Proofing at Your Manufacturing Facility

Created by: Ray Harkins

Last updated May 2026

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What you will learn

  • The history and strategy of error-proofing
  • Why error proofing in necessary in manufacturing processes
  • Practical examples of error-proofing in process and product design
  • Error-proofing as a tool toward zero defects
  • A case study on how error proofing was implemented in a CNC machining operation
  • "Source inspection" as a quality assurance approach

How it compares

Against the other 1,210 rated Udemy courses in Business on CourseDuck:

  • Rating4.7 out of 5higher than 90% of them
  • Reviews277#836 of 1,211 by number of reviews
  • Length2.5 hoursshorter than 55% of them
  • Last updatedMay 2026more recently than 70% of them

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Course Description

Error-proofing, or poka yoke as it's often called, is an over-arching strategy to help organizations achieve zero defects in their manufacturing processes.  Developed and popularized in Japan by Shigeo Shingo in the 1950's, these methods and techniques can now be found in manufacturing process across multiple industries, embedded into a wide range of consumer products, and employed by innovative quality and process professionals around the globe.

In their purest form, an error-proofing device prevents a defect from being made. By using simple sensors and mechanical devices, engineers can design assembly and test fixtures that prevent the processing the parts configured in an incorrect fashion. Other error proofing device can prevent a defect part from moving onto the next process. And still others simply assist the operators in not making a defect.

When combined with other strategies such as Statistical Process Control, Layered Process Auditing, and Root Cause Analysis, a systemic deployment of error proofing can help an organization DRIVE THEIR DEFECTS TO ZERO.

In this course, "Fundamentals of Error Proofing: The Path Toward Zero Defects", students will learn the history and basic strategy of error proofing, along with gaining practical applications of this approach. The course is broken into several sections: 

  • Error Proofing as a Path to Zero Defect with Manufacturing Academy instructor, Mike Vella

  • Basics examples of Error Proofing

  • A Case Study of Error Proofing in a CNC Machining Application

  • Sensor-based error proofing designs

  • Integrating error-proofing into your quality management system

  • Error-proofing and lean manufacturing

By the end of this course, students will understand the major approaches of error-proofing and be armed with the knowledge they need to start deploying these strategies in their manufacturing processes.

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Instructor Details

Ray Harkins

Ray Harkins is a senior manufacturing leader, educator, and founder of The Manufacturing Academy, with more than 30 years of experience in manufacturing engineering, quality engineering and management, and operations leadership. He currently serves as a General Manager in manufacturing, overseeing operations, quality, engineering, and continuous improvement while remaining actively engaged in solving the day-to-day challenges faced by manufacturers.

After beginning his career in manufacturing engineering, Ray expanded into quality and operations leadership, working alongside leading industry professionals throughout North America and Japan and touring hundreds of manufacturing facilities. These experiences shaped his belief that manufacturing professionals deserve practical training that they can immediately apply to improve quality, productivity, and their careers.

That philosophy has guided the development of more than 60 online courses covering Lean Six Sigma, Statistical Process Control, Supply Chain Analytics, Manufacturing Leadership, Reliability Engineering, and Operations Management. His courses are used by individual professionals and corporate training departments worldwide and have helped more than 140,000 students build practical skills and advance their careers.

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Reviews

4.7

277 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Gisselle Montes de Oca on 2/3/2026

The content is really insightful and pragmatic. Exactly what I was looking for. A note on improvement: the self generated close captions have some errors when stating technical terms. These are very helpful for students that are not English native speakers, so I’d recommend checking those.

By Anonymized User on 1/22/2026

amazing session with more practical examples and ideas and overview of EPD documentation process

By Nagraj Kalyani on 1/7/2026

Poka-Yoke (Mistake-Proofing) Tools Autonomous AI-Driven Logic Validation

By Asya Ivanova on 11/4/2025

As always, a very good course with useful information and examples. Thank you!

By Peter Welty on 2/20/2025

Good except the final "bonus lecture" was just an 11 minute ad for other classes. A professional educator does not need that.

By Collins K Bakia on 6/14/2024

Content is very resourceful. Explanations are clear and concise. Examples are very relevant.

By Maria Rivera on 6/7/2024

Presentation of topics are relatively sequenced, and the subject/topic is well presented

By Alexander Smolle on 6/9/2023

This course offers a very good introduction into the wide field and possibilities of error-proofing and poka yokes. Very well constructed and taught course, as most of the courses offered in this series.

By Robert Manning on 1/22/2023

This course was excellent. It went above and beyond what I expected and is certainly far superior to many of the other courses I have taken. Great job guys!

By Kathy Lewis on 1/5/2023

Excellent examples and presentations. Provides lots of good ideas for error proofing.

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Overall Score : 94 / 100