3D Printing FoundationsWall Thickness
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3D Printing Foundations

Course progress0/14
1Understanding 3D Printing
  • Introduction to 3D Printing
  • Understanding Scale
  • Your First Print-Sized Model
  • Checking Print Dimensions
2Build Plate & Wall Thickness
  • The Build Plate
  • Positioning Objects
  • Wall Thickness
  • Creating Thick-Walled Objects
3Overhangs & Supports
  • Understanding Overhangs
  • Self-Supporting Shapes
  • When to Use Supports
  • Optimizing for Minimal Supports
4Your First Print
  • Print Readiness Checklist
  • Project: Simple Keychain

3D Printing Foundations

Course progress0/14
1Understanding 3D Printing
  • Introduction to 3D Printing
  • Understanding Scale
  • Your First Print-Sized Model
  • Checking Print Dimensions
2Build Plate & Wall Thickness
  • The Build Plate
  • Positioning Objects
  • Wall Thickness
  • Creating Thick-Walled Objects
3Overhangs & Supports
  • Understanding Overhangs
  • Self-Supporting Shapes
  • When to Use Supports
  • Optimizing for Minimal Supports
4Your First Print
  • Print Readiness Checklist
  • Project: Simple Keychain

Wall Thickness: Strength in Layers

3D printed layers closeup
Each layer needs proper thickness for strength
Wall thickness determines print strength.

Minimum Thicknesses

Printer TypeMinimumRecommended
FDM (0.4mm nozzle)1.2mm2.0mm
Resin/SLA0.5mm1.0mm
Important
Walls thinner than the minimum will either fail to print or be extremely fragile. Always aim for at least the recommended thickness.

Why 1.2mm for FDM?

  • 1 perimeter = 0.4mm (very weak)
  • 2 perimeters = 0.8mm (okay)
  • 3 perimeters = 1.2mm (recommended)

Think: "Is this at least 3 nozzle widths thick?"

Tip
For functional parts that need to withstand stress (like phone holders or clips), use 2mm+ walls for extra durability.