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What will happen if a drill file contains two tool definitions with the same tool number but different diameters?

medium📝 Formula Result Q5 of 15
PCB Design - Manufacturing Output
What will happen if a drill file contains two tool definitions with the same tool number but different diameters?
AThe first tool definition is used and others ignored
BThe drill file will cause a syntax error
CThe last tool definition overrides the previous one
DBoth tools will be used alternately
Step-by-Step Solution
Solution:
  1. Step 1: Understand tool number uniqueness

    Tool numbers must be unique; if repeated, the last definition takes precedence.
  2. Step 2: Effect on drill file processing

    The drill machine uses the last diameter assigned to that tool number.
  3. Final Answer:

    The last tool definition overrides the previous one -> Option C
  4. Quick Check:

    Duplicate tool number = last definition wins [OK]
Quick Trick: Last tool definition with same number is used [OK]
Common Mistakes:
MISTAKES
  • Assuming syntax error on duplicate tool numbers
  • Thinking both tools alternate usage
  • Believing first definition always applies

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