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OrcaSlicer/doc/print_settings/strength/strength_settings_infill.md
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Wiki Update part 5 (#9873) 
* BASE

* precise wall and z moved

* PolyHoles

* Arc-fitting

* X-Y Compensation

* Elephant foot + moved images

* Update quality_settings_precision.md

* Wall generator and more

* Full Reorder

* TPMS-D bases

* Update strength_settings_infill.md

* Image Fix + Infill desc calculator

* Descriptions + image fix

Co-Authored-By: Rodrigo <162915171+RF47@users.noreply.github.com>

* Update cornering-calib.md

* minor fixes

* Wip updated

* Missing fills

* Update infill_desc_calculator.xlsx

* Update infill_desc_calculator.xlsx

* Update infill documentation and images

Removed outdated 'iso' infill images and updated 'top' infill images with new versions. Added new images for adaptive cubic and 2D honeycomb infill patterns. Updated strength_settings_infill.md to revise infill strength values, descriptions, and remove references to deleted images. Introduced documentation for 2D honeycomb infill and made minor corrections and clarifications throughout.

* Revise infill pattern documentation and add comparison table

Updated strength_settings_infill.md to clarify infill density calculation, add a comprehensive comparison table of infill patterns, and standardize terminology for strength and print time. Expanded pattern descriptions to use qualitative strength ratings instead of numeric values. Updated infill_desc_calculator.xlsx to reflect these changes.

* Indentation in  code examples

Adjusted the indentation of code blocks in the cornering calibration documentation for clarity and consistency with the rest of the document.

* Update 3D Honeycomb infill strength ratings

Adjusted the horizontal strength rating for 3D Honeycomb infill from 'Normal' to 'Normal-High' in the strength settings documentation and table. Updated the infill_desc_calculator.xlsx file to reflect these changes.

* Formatting and fix in ERS documentation

Updated headings to use consistent Markdown syntax, improved clarity in explanations, and reworded references for better readability.

* Fix wall generator doc link and filename

Updated the Home.md to reference the correct 'quality_settings_wall_generator' section and renamed the corresponding documentation file for consistency.

---------

Co-authored-by: Rodrigo <162915171+RF47@users.noreply.github.com>
2025-06-20 10:19:48 +08:00

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Infill

Infill is the internal structure of a 3D print, providing strength and support. It can be adjusted to balance material usage, print time, and part strength.

Sparse infill density

Density usually should be calculated as a % of the total infill volume, not the total print volume. Higher density increases strength but also material usage and print time. Lower density saves material and time but reduces strength.

Nevertheless, not all patterns interpret density the same way, so the actual material usage may vary. You can see each pattern's material usage in the Sparse Infill Pattern section.

Sparse Infill Pattern

Infill patterns determine how material is distributed within a print. Different patterns can affect strength, flexibility, and print speed using the same density setting.

There is no one-size-fits-all solution, as the best pattern depends on the specific print and its requirements.

Many patterns may look similar and have similar overall specifications, but they can behave very differently in practice. As most settings in 3D printing, experience is the best way to determine which pattern works best for your specific needs.

Infill X-Y Strength Z Strength Material Usage Print Time
Concentric Low Normal Normal Normal
Rectilinear Normal-Low Low Normal Normal
Grid High High Normal Normal
2D Lattice Normal-Low Low Normal Normal
Line Low Low Normal Normal-Low
Cubic High High Normal Normal-Low
Triangles High Normal Normal Normal-Low
Tri-hexagon High Normal-High Normal Normal-Low
Gyroid High High Normal Normal-High
TPMS-D High High Normal High
Honeycomb High High High Ultra-High
Adaptive Cubic Normal-High Normal-High Low Low
Aligned Rectilinear Normal-Low Normal Normal Normal
2D Honeycomb Normal-Low Normal-Low Normal Normal-Low
3D Honeycomb Normal-High Normal-High Normal-Low High
Hilbert Curve Low Normal Normal High
Archimedean Chords Low Normal Normal Normal-Low
Octagram Spiral Low Normal Normal Normal-High
Support Cubic Low Low Extra-Low Extra-Low
Lightning Low Low Ultra-Low Ultra-Low
Cross Hatch Normal-High Normal-High Normal Normal-High
Quarter Cubic High High Normal Normal-Low

Note

You can download infill_desc_calculator.xlsx used to calculate the values above.

Concentric

Fills the area with progressively smaller versions of the outer contour, creating a concentric pattern. Ideal for 100% infill or flexible prints.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Normal
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal
  • Material/Time (Higher better): Normal-High

infill-top-concentric

Rectilinear

Parallel lines spaced according to infill density. Each layer is printed perpendicular to the previous, resulting in low vertical bonding.

  • Horizontal Strength (X-Y): Normal-Low
  • Vertical Strength (Z): Low
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal
  • Material/Time (Higher better): Normal-High

infill-top-rectilinear

Grid

Two-layer pattern of perpendicular lines, forming a grid. Overlapping points may cause noise or artifacts.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal
  • Material/Time (Higher better): Normal

infill-top-grid

2D Lattice

Low-strength pattern with good flexibility. Angle 1 and angle 2 TBD.

  • Horizontal Strength (X-Y): Normal-Low
  • Vertical Strength (Z): Low
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal
  • Material/Time (Higher better): Normal

infill-top-2d-lattice

Line

Similar to rectilinear, but each line is slightly rotated to improve print speed.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Low
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal-High

infill-top-line

Cubic

3D cube pattern with corners facing down, distributing force in all directions. Triangles in the horizontal plane provide good X-Y strength.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal-High

infill-top-cubic

Triangles

Triangle-based grid, offering strong X-Y strength but with triple overlaps at intersections.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): Normal
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal-High

infill-top-triangles

Tri-hexagon

Similar to the triangles pattern but offset to prevent triple overlaps at intersections. This design combines triangles and hexagons, providing excellent X-Y strength.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): Normal-High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal-High

infill-top-tri-hexagon

Gyroid

Mathematical, isotropic surface providing equal strength in all directions. Excellent for strong, flexible prints and resin filling due to its interconnected structure.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-High
  • Material/Time (Higher better): Low

infill-top-gyroid

TPMS-D

Triply Periodic Minimal Surface - D. Hybrid between Cross Hatch and Gyroid, combining rigidity and smooth transitions. Isotropic and strong in all directions.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: High
  • Material/Time (Higher better): Low

infill-top-tpms-d

Honeycomb

Hexagonal pattern balancing strength and material use. Double walls in each hexagon increase material consumption.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): High
  • Density Calculation: % of total infill volume
  • Material Usage: High
  • Print Time: Ultra-High
  • Material/Time (Higher better): Extra Low

infill-top-honeycomb

Adaptive Cubic

Cubic pattern with adaptive density: denser near walls, sparser in the center. Saves material and time while maintaining strength, ideal for large prints.

  • Horizontal Strength (X-Y): Normal-High
  • Vertical Strength (Z): Normal-High
  • Density Calculation: Same as Cubic but reduced in the center
  • Material Usage: Low
  • Print Time: Low
  • Material/Time (Higher better): Normal

infill-top-adaptive-cubic

Aligned Rectilinear

Parallel lines spaced by the infill spacing, each layer printed in the same direction as the previous layer. Good horizontal strength perpendicular to the lines, but terrible in parallel direction. Recommended with layer anchoring to improve not perpendicular strength.

  • Horizontal Strength (X-Y): Normal-Low
  • Vertical Strength (Z): Normal
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal
  • Material/Time (Higher better): Normal

infill-top-aligned-rectilinear

2D Honeycomb

Vertical Honeycomb pattern. Acceptable torsional stiffness. Developed for low densities structures like wings. Improve over 2D Lattice offers same performance with lower densities.This infill includes a Overhang angle parameter to improve interlayer point of contact and reduce the risk of delamination.

  • Horizontal Strength (X-Y): Normal-Low
  • Vertical Strength (Z): Normal-Low
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal

infill-top-2d-honeycomb

3D Honeycomb

This infill tries to generate a printable honeycomb structure by printing squares and octagons mantaining a vertical angle high enough to mantian contact with the previous layer.

  • Horizontal Strength (X-Y): Normal-High
  • Vertical Strength (Z): Normal-High
  • Density Calculation: Unknown
  • Material Usage: Normal-Low
  • Print Time: High
  • Material/Time (Higher better): Extra Low

infill-top-3d-honeycomb

Hilbert Curve

Hilbert Curve is a space-filling curve that can be used to create a continuous infill pattern. It is known for its Esthetic appeal and ability to fill space efficiently. Print speed is very low due to the complexity of the path, which can lead to longer print times. It is not recommended for structural parts but can be used for Esthetic purposes.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Normal
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: High
  • Material/Time (Higher better): Extra Low

infill-top-hilbert-curve

Archimedean Chords

Spiral pattern that fills the area with concentric arcs, creating a smooth and continuous infill. Can be filled with resin thanks to its interconnected hollow structure, which allows the resin to flow through it and cure properly.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Normal
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal-High

infill-top-archimedean-chords

Octagram Spiral

Esthetic pattern with low strength and high print time.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Normal
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-High
  • Material/Time (Higher better): Normal

infill-top-octagram-spiral

Support Cubic

Support |Cubic is a variation of the Cubic infill pattern that is specifically designed for support top layers. Will use more material than Lightning infill but will provide better strength. Nevertheless, it is still a low-density infill pattern.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Low
  • Density Calculation: % of layer before top shell layers
  • Material Usage: Extra-Low
  • Print Time: Extra-Low
  • Material/Time (Higher better): Normal

infill-top-support-cubic

Lightning

Ultra-fast, ultra-low material infill. Designed for speed and efficiency, ideal for quick prints or non-structural prototypes.

  • Horizontal Strength (X-Y): Low
  • Vertical Strength (Z): Low
  • Density Calculation: % of layer before top shell layers
  • Material Usage: Ultra-Low
  • Print Time: Ultra-Low
  • Material/Time (Higher better): Extra Low

infill-top-lightning

Cross Hatch

Similar to Gyroid but with linear patterns, creating weak points at internal corners.

  • Horizontal Strength (X-Y): Normal-High
  • Vertical Strength (Z): Normal-High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-High
  • Material/Time (Higher better): Low

infill-top-cross-hatch

Quarter Cubic

Cubic pattern with extra internal divisions, improving X-Y strength.

  • Horizontal Strength (X-Y): High
  • Vertical Strength (Z): High
  • Density Calculation: % of total infill volume
  • Material Usage: Normal
  • Print Time: Normal-Low
  • Material/Time (Higher better): Normal

infill-top-quarter-cubic