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Why might a 3D printer use more perimeters than strictly needed for wall thickness?

hard📝 Conceptual Q10 of 15
3D Printing - Slicer Software Basics
Why might a 3D printer use more perimeters than strictly needed for wall thickness?
ATo decrease layer height
BTo reduce filament usage
CTo speed up printing
DTo improve surface finish and strength
Step-by-Step Solution
Solution:
  1. Step 1: Understand effects of extra perimeters

    More perimeters add strength and improve surface smoothness by reinforcing walls.
  2. Step 2: Exclude incorrect reasons

    More perimeters increase filament use and print time, so they do not reduce filament or speed up printing; layer height is unrelated.
  3. Final Answer:

    To improve surface finish and strength -> Option D
  4. Quick Check:

    Extra perimeters = better strength and finish [OK]
Quick Trick: Extra perimeters improve strength and surface quality. [OK]
Common Mistakes:
  • Thinking extra perimeters save filament
  • Assuming extra perimeters speed printing
  • Confusing perimeters with layer height

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