상황
A sputtering target manufacturer observes unacceptable grain size variation across rolled metal targets, affecting thin film uniformity. The team uses the fishbone to organize potential root causes by 6M categories.
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01
Pin top and bottom categories to keep the diagram balanced
02
Add sub-causes under the most probable root causes
03
Avoid compact shorthand to keep category IDs unambiguous
Use when investigating metallurgical or dimensional non-uniformity in rolled metal products where multiple causal categories must be explored.