Infill

Also known as: Fill Density, Internal Structure, Fill Pattern

beginner Slicer Settings ⚙️ Slicer Setting

The internal structure printed inside a 3D model for strength and support.

Infill is the internal pattern printed inside your model. It provides structural support without using solid plastic throughout, saving material and print time.

Infill Percentage

  • 0% - Hollow (requires vase mode or manual top layers)
  • 10-15% - Decorative items, display models
  • 20-25% - General purpose, most prints
  • 30-50% - Functional parts, moderate stress
  • 50-75% - High-stress parts, load-bearing
  • 100% - Solid (rarely needed, slow)

Common Infill Patterns

Grid / Lines

  • Fast to print
  • Moderate strength
  • Good for most purposes

Gyroid

  • Strong in all directions (isotropic)
  • Slightly slower
  • Excellent strength-to-weight

Honeycomb

  • Classic strong pattern
  • Good crush resistance
  • Takes longer than grid

Cubic / Cubic Subdivision

  • Good all-around strength
  • Subdivision saves material in center

Lightning

  • Minimal infill, supports top layers only
  • Very fast, uses least material
  • Not for structural parts

Triangles

  • Strong against lateral forces
  • Good for tall, thin objects

Tips

  • Higher infill isn’t always stronger—wall count matters more
  • 3-4 walls often beats 15% vs 50% infill for strength
  • Infill pattern matters more than percentage for specific loads
  • Use gradual infill to put more material near top/bottom