πŸ“– Articles

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Concise, actionable knowledge for solving real problems at work

πŸ“„ 54 articles in total πŸ“… Continuously updated πŸ”₯ Pinned first, then sorted by rating, views and publish date
Advanced Quality & R&D Quality Β· Change Management Β· Design & Process Changes

Change Review as a Formality, Resulting in Failures? β€”β€” CCB Change Review Five-Step Method, Welding the Quality Gate onto the Change Process

In an automotive parts company, the customer's drawing changed the bracket installation hole from Ο†8.5 to Ο†9.0. Technici…

Advanced Quality & R&D Quality Β· Process Development & Approval Β· Control Plan (CP)

Inspection Frequency in Control Plans: Still Guessing? β€”β€” A Five-Step Method for Designing Inspection Methods and Frequencies

1. One Line of Text, Two Outcomes In the control plan of a certain automotive parts company, both SC special characteris…

Advanced Quality & R&D Quality Β· Process Development & Approval Β· PPAP & Process Approval

The 18 PPAP Submission Items: What Are They Really Proving? β€”β€” Element Classification Logic and the Three-Step Self-Check Method

Many quality professionals, when they first handle PPAP, simply follow the client's checklist: if the client asks for so…

Advanced Quality & R&D Quality Β· Process Development & Approval Β· Control Plan (CP)

Customer Audits, Control Plans Often Nonconforming? β€”β€” Five-Step Self-Check Method and High-Frequency Nonconformity List

The control plan is a critical checkpoint for PPAP submission, mass production delivery, and customer audits. However, m…

Advanced Quality & R&D Quality Β· Design Quality Β· Special Characteristics & Drawing Specifications

Special Characteristics Lost in Supplier Communication? β€”β€” Five Steps for SC/CC Supply Chain Transmission and Implementation Control

1. Introduction: The Diamond Symbol on Your Own Drawing, but Lost at the Supplier Last year, a car parts company receive…

Advanced Quality & R&D Quality Β· Process Development & Approval Β· PPAP & Process Approval

PPAP Submitted Three Times and Rejected Each Time? β€”β€” Five Common Rejection Reasons and a Five-Step Pre-Submission Self-Inspection Method

A supplier has just completed the sample pieces for a new project, and the quality engineer packs and sends the PPAP doc…

Advanced Quality & R&D Quality Β· Design Quality Β· Special Characteristics & Drawing Specifications

Is It Safe to Rely on Control Charts for SC/CC? β€”β€” A Five-Step Method for Designing Statistical Monitoring Plans for Special Characteristics

Many companies have experienced this: the drawings are marked with SC/CC, and the control plan specifies "SPC monitoring…

Advanced Quality & R&D Quality Β· Process Development & Approval Β· Control Plan (CP)

Control Plan Compilation in Three Volumes, Yet No One Follows It on the Shop Floor? β€”β€” Six Steps from Compilation to Implementation

1. The Root Cause of the "Two Skin" Problem in CP Many companies' control plans CP are "compiled" rather than developed …

Advanced Quality & R&D Quality Β· Design Quality Β· Special Characteristics & Drawing Specifications

Special Characteristics Not Well Managed? First, Identify Where the Loop is Broken β€” Five Key Links in the Full Lifecycle Management of SC/CC

1. Common Issues in Special Characteristics Management: Not Lack of Identification, but Chain Breakage Many companies ar…

Advanced Quality & R&D Quality Β· Process Development & Approval Β· PPAP & Process Approval

How to Choose the PPAP Submission Level (1 to 5)? β€”β€” Three Criteria for Level Selection, Pass on the First Submission

I. Introduction: The Same Part, Two Different Treatments from Two Suppliers A new project trial production at a certain …

Advanced Quality & R&D Quality Β· Process Development & Approval Β· Control Plan (CP)

Reaction Plans in Control Plans: Only Writing "Notify Quality Department"? β€”β€” Methods for Designing Immediate Response Paths

1. Reaction Plan: The Most Overlooked Column in Control Plans Opening a control plan, the first few columnsβ€”process, cha…

Advanced Quality & R&D Quality Β· Design Quality Β· Special Characteristics & Drawing Specifications

Special Characteristics and Drawing Specifications in Practice β€” A Systematic Approach to Make Key Characteristics "Speak" on Drawings

Many quality professionals have experienced this: a product problem occurs at the client's end, and upon tracing back, i…