Last week, in my article “Mit 40 wird man gscheid – At 40 One Becomes Wise”, I reflected on something life slowly teaches us with experience. Interestingly, the trigger for this week’s reflection came from two completely different customer situations, I experienced last week.
In the first case, a customer discovered that a small feature, a pocket, was missing in a CNC machined component. The drawing clearly showed the feature. During CNC programming, the programmer accidentally missed this feature while preparing the program.
The machine ran perfectly. Operators produced the parts. Inspection was done.
Yet the feature slipped through the entire system and reached the customer. The natural reaction in such situations is to say: “The programmer and everyone thereafter made a mistake.” But experience slowly teaches us to ask a deeper question. Why did the system allow this mistake to reach the customer?
The second situation came from a completely different industry.
A company manufacturing a premium lifestyle product had a similar experience. A product reached the customer with a small dent, damage or scratch (DDS) on its surface. Technically the product still worked.
But luxury customers do not buy only functionality. They buy perfection of experience. Even a small scratch can break that emotional expectation.
Again, the natural question was not: “Who missed and allowed the scratch?”. The real question should have been was: Why did the system allow the defect to escape?
Both incidents reminded me of a powerful truth about manufacturing. Human beings will always make mistakes. In fact, I keep saying that we are born to make mistakes. But defects occur only when the system allows those mistakes to reach the customer.
As I reflected on these situations, I recollected something else. Today is International Women’s Day. And when we observe strong organisations, we often see that the foundation of good systems comes from qualities traditionally associated with the feminine.
Empathy. Compassion. Patience. The ability to forgive mistakes and help people learn.
In organisations where mistakes are punished harshly, people quickly learn one survival skill: Hide the problem. But when leaders respond with empathy and curiosity, something beautiful happens. People begin to reveal problems early.
And when problems become visible early, systems can improve. In many ways, the foundation of zero defect thinking is deeply human.
It begins with a belief: People are not the problem. The system, or the organisations subconscious, is the problem to be improved. Once this mindset becomes part of leadership behaviour, something powerful starts happening inside the organisation.
Now let me get back to the two situations that triggered this reflection. Let us return to the CNC example.
A programmer accidentally misses a feature while preparing the program. The mistake itself is understandable. Programming is complex work. But for the defect to reach the customer, several protections had to be missing.
Program Verification
The checklist comparing the CNC program with the drawing didn’t have the checkpoint on the feature:
- All cutting speeds are OK
- All dimensions covered
- All operations included
- All features present (NEW)
Such structured verification after immediate updating from the learning makes it difficult to miss features.
First Piece Validation
Before production begins, the first machined part must be compared carefully with the drawing.
Not only dimensions. But every feature. If this step is done with discipline, and by cross functional team, the missing feature would be discovered immediately.
Production would stop. The program would be corrected. And hundreds of defective parts would never be produced.
Feature-Based Inspection
Inspection often focuses only on dimensions and general appearance. But drawings contain features, not only measurements. Creating a feature checklist transforms inspection into a structured activity.
For example:
- Pocket present ✔
- Slot present ✔
- Thread present ✔
- Chamfer present ✔
Suddenly the missing feature becomes impossible to overlook.
Now consider the second situation involving DDS in a luxury product.
In such products, customers expect perfection. A small scratch can damage the entire customer experience. Yet scratches often escape because visual inspection conditions are poor.
Proper Workplaces
- Strong lighting.
- Correct viewing angles.
- Clean inspection areas.
Under proper conditions, small scratches become immediately visible, as every person handling the product checks for the incoming quality, processing quality and the outgoing quality.
Visual Acceptance Standards
Another challenge is subjective judgement. One person may accept a mark. Another person may reject it.
The solution is simple visual standards, limit samples, showing:
- acceptable surfaces
- unacceptable dents
- unacceptable scratches
This brings consistency to inspection.
Designing the Process to Prevent Damage
The most powerful solution is prevention.
Simple improvements can drastically reduce DDS:
- protective fixtures
- soft trays
- protective films
- gloves during handling
When damage generation reduces, inspection becomes easier and more reliable.
The Quiet Leadership Practice Behind Reliable Quality
In strong organisations, there is another simple but powerful leadership practice that quietly reinforces quality.
Leaders regularly ask the person directly doing the work to explain the process.
A plant manager may ask the production manager. The production manager asks the supervisor. The supervisor asks the operator. And the operator, initially intimidated by so many people, but later confident due to regular repetition, explains:
“This is what I am doing. These are the standards I follow. This is how I ensure I don’t process defects and no defects pass to the next step.”
The same happens with everyone: engineers, programmers, inspectors, and engineers.
The purpose is not to test people. The purpose is to reinforce clarity and ownership.
When people explain their work in their own words, two things become visible. If the process is clear, confidence appears. If the process is unclear, improvement opportunities appear. Over time this simple practice strengthens adherence to standards and keeps the system, the organisation’s subconscious alive.
When Quality Becomes Natural
I still remember the moment when one of our processes ran without a customer complaint. At first people thought it was luck. But slowly we realised something deeper had changed. The process was stable. Operators understood their work clearly. Mistakes were detected early. Problems were solved systematically.
Quality had become natural. Not forced. Not inspected. Simply built into the work.
Zero outgoing defects requires clear thinking, simple systems with consistent practices, and compassionate leadership. And when this mindset spreads across an organisation, something remarkable happens.
Ordinary people begin producing extraordinary quality. Every single day.
Happy reading!
Hello Dinakar, Root cause analysis, Go to Gemba , visual stds both subjective and objective are well explained. The CNC topic is relevant now. All in all, a good learning for all in manufacturing.
Yet again you provided the insights and practical aspects. Thank you Dinakar,