Problem-Solving

Why Data Matters Troubleshooting without data is guessing. I’ve watched operators change tools, adjust feeds, and tweak coolant pressure without any record of what was happening before the problem started. They fix things by accident and never know what actually worked. Good data turns troubleshooting from a guessing game into a comparison exercise. When a problem appears, I compare the current readings to the baseline from when the job was running well. The difference between them points directly at the root cause. ...

Why Root Cause Analysis Matters Root cause analysis (RCA) is the difference between fixing a problem once and fixing it over and over. I have seen the same broken drill, the same oversized hole, and the same surface finish problem recur because someone fixed the symptom instead of the cause. A symptom is what you see. A broken drill is a symptom. The root cause is why the drill broke. Fixing the symptom means putting in a new drill. Finding and fixing the root cause means the new drill does not break again. ...

A customer brought in a shaft that had been welded and needed a through-hole drilled. The weld ran across the center of the shaft at about mid-length. The shaft was 4140 steel, about 80mm in diameter and 1.5 meters long. The weld was a full-penetration butt weld joining two sections of shaft. The customer had welded it using a TIG process with ER70S-6 filler rod. The customer had welded it, stress-relieved it, and then decided they needed a 20mm through-hole for a hydraulic passage. ...