One of the first things people do when they find a coating defect is ask,
“How do we fix it?”
It’s a fair question. But over the years, I’ve learned there’s usually a better one.
“What is this defect trying to tell us?”
That’s where troubleshooting really begins. I’ve learned that most recurring defects aren’t random, they’re evidence: every defect has a cause. The challenge isn’t simply fixing the defect.
It’s understanding what the process is trying to tell you before you start changing settings.
- Sometimes the answer is pretreatment.
- Sometimes it’s part preparation.
- Sometimes it’s application.
- Sometimes it’s curing.
- Sometimes it’s contamination introduced somewhere along the line.
The defect is simply where the process finally revealed itself. That’s why I don’t like chasing defects. I like following the evidence. Because if you ask enough questions, most recurring defects will eventually point you toward the part of the process that needs your attention.