[Solved] If a model has a bridge length of 20 mm, what design change helps reduce the need for supports? — Ans: Add a slight arch shape to the bridge | 3D Printing

3D Printing - Support Structures

If a model has a bridge length of 20 mm, what design change helps reduce the need for supports?

AIncrease the bridge length to 40 mm

BAdd a slight arch shape to the bridge

CMake the bridge completely flat

DUse a thinner bridge cross-section

Step-by-Step Solution

Solution:

Step 1: Understand bridge printing challenges
Long flat bridges tend to sag without supports.
Step 2: Identify design changes to reduce sagging
A slight arch shape helps distribute weight and reduces sagging.
Final Answer:
Add a slight arch shape to the bridge -> Option B
Quick Check:
Arch shape = Stronger bridge, fewer supports [OK]

Quick Trick: Arch bridges print better than flat bridges without supports [OK]

Common Mistakes:

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If a model has a bridge length of 20 mm, what design change helps reduce the need for supports?