Root Cause Analysis for Deep Hole Drilling Problems
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. ...