Cura infill patterns – how it works

Cura infill patterns play an important role in 3D printing since they determine the strength and stability of a 3D printed object. There are several Cura infill patterns available to choose from – Lines, Grid, Triangles, Cubic, and Gyroid. Each Cura infill pattern comes with its own benefits and drawbacks depending.

Lines Cura infill is one of the most common patterns used for 3D. It is quite simple, as it consists of straight lines running from one side of an object to the other. This creates a lightweight but strong structure. The downside is that it creates vertical ridges.

The filament material is crucial for the strength of your 3D printed part. It plays an essential role in determining the infill strength of your part.

Most infill patterns have similar weight with the same infill density, but the Triangle pattern showed an almost 40% increase in overall weight. Pranav Gharge The Lighting infill in the latest release of the Cura slicer is the quickest infill pattern.

There is usually a good balance to strike between infill percentages, which is anywhere from 10%-30% depending on what you intend to use the part for.

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What Types of Infill Patterns are There?

When it comes to 3D printing, infill patterns are an important part of the slicing process used to fill in the interior portion of a 3D printed object. The type of infill pattern chosen can have a significant impact on the strength, weight and cost of the resulting print. Cura, one of the most popular and widely used.

For such components, choose an infill density between 20% and 50%, as these offer a good mix of stability, print speed, and cost-efficiency. When using traditional infill settings, a large amount of unneeded internal infill material is printed. These are the best infill patterns for certain priorities:

  • Grid – The Grid pattern resembles the Lines pattern, but there is a major difference: the Lines pattern only prints in one direction per layer, adding perpendicular lines in the subsequent layer, and so on. Nevertheless, it is equally strong in multiple directions.
  • Lines – The best infill pattern for speed is the Lines or Rectilinear pattern, which is the default infill pattern in Cura.
  • Triangle.
  • Tri-Hexagonal.
  • Cubic – This variation of cubic uses less material. The Cubic or Honeycomb infill pattern also looks great for transparent 3D prints.
  • Cubic Subdivision.
  • Octet.
  • Quarter Cubic.
  • Concentric – This 2D pattern produces “waves” through the interior of the print, mimicking the shapes of the outer walls. The concentric infill pattern generates walls within the object.
  • ZigZag.
  • Cross.
  • Cross3D.
  • Gyroid – Gyroid Strong 3D infill The Cura Gyroid high-strength infill pattern creates wavy lines of alternating directions. The downside is that the Gyroid pattern adds to print times and puts your slicer through its paces when readying a model for printing.

However, Cross and Gyroid tend to offer better directional strength and offer better flexibility at lower infill densities.

To move the pattern to the left, right, top, or bottom a X or Y offset can be used. A positive value moves it UP and RIGHT, while a negative value moves it DOWN or LEFT. This does not work for the concentric infill types. Infill overlap percentage With this setting you can control the amount of overlap between the infill and walls.

However, it may be advantageous to orient the infill at a different angle in order to provide maximum strength or flexibility to the part. The Cross pattern does not require retraction, which prevents oozing of flexible materials. A higher infill density means that there is more plastic on the inside of your print, leading to a stronger object.

What is Grid Infill?

Grid Infill is an innovative type of infill pattern that is used to construct and strengthen the foundation of structures such as walls, ceilings, and floors. It works by crossing two perpendicular sets of lines at right angles to each other, forming squares in between each set. This type of infill pattern helps to provide increased stability and rigidity.

What is Tri-Hexagonal Infill?

Tri-Hexagonal Infill is a type of 3D printing process used to improve the strength, durability, and structural integrity of 3D printed objects. It does this by utilizing a unique infill pattern that incorporates both triangular and hexagonal shapes.

The pattern is created by generating three sets of lines in three different directions, but in a way that they don’t intersect in the same position with each other.

One advantage is that hexagons are an efficient shape, making them a strong infill pattern relative to their material usage.

What is Cubic Infill?

Cubic Infill is a 3D printing technology that creates cubes that are tilted and stacked to create a three-dimensional pattern. This type of infill is used in 3D printing to make objects stronger and more durable, as well as providing a more aesthetically pleasing look due to the geometric patterns created by the cubes.

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What is Cubic Subdivision Infill?

Cubic Subdivision Infill is a type of 3D printing infill pattern that creates cubes and a three-dimensional pattern with bigger cubes in the middle. This is done so that the most important areas for strength have good infill, while saving material where infill is less effective.

When using this pattern, it is important to increased with this pattern because they can be really low in the mid-areas.

  • Best and strongest pattern in terms of weight and printing time (strength to weight ratio)
  • Equal strength in all directions, including vertically
  • Also reduces the effects of pillowing
  • Increasing infill density means infill shouldn’t show through the walls
  • Has many retractions, not great for flexibles or less viscous materials (runny)
  • Slicing time is relatively longer

What is Octet Infill?

Octet infill is a three-dimensional pattern that creates a combination of cubes and regular tetrahedra (triangles with four sides). This pattern ensures that multiple infill lines will be adjacent to each other. By using this technique, one can create complex designs with intricate details.

Cura infill patterns

What is Quarter Cubic Infill?

The Quarter Cubic Infill is an advanced 3-dimensional printing pattern or tessalation that uses a combination of tetrahedra and shortened tetrahedra to create a strong and durable structure. This type of infill places multiple infill lines alongside each other at regular intervals to further strengthen the object being printed.

What is Concentric Infill?

Concentric infill is a type of 3D printing pattern used for many types of objects and materials. It is made up of a series of concentric circles, or rings, that fill the shape of the object or structure. The circles are radiating from the center to the outer edges and repeat until complete.

What is Zigzag Infill?

Zigzag infill is a popular 3D printing pattern that produces a distinctive interlocking zigzag shape in the model material. It is often used in support structures or to add extra strength and rigidity to the 3D printed object. The basic idea behind it is that the alternating lines of material crisscross one another, creating.

  • When using 100% infill density, this pattern is the second strongest
  • Better for circular shapes compared to the Concentric pattern at 100% infill percentage
  • One of the best patterns for a smooth top surface, as line distance is very little
  • Has a weak strength in the vertical direction as the layers have inadequate bond points
  • Very weak in the horizontal direction, other than in the direction the lines are oriented
  • Bad resistance to shear, so fails quickly under a load

For such applications, the lines infill pattern is best because it gives the fastest print. The Zigzag pattern simply creates the very pattern as it’s named.

What is Cross Infill?

Cross Infill is an uncommon pattern used to create complex and interesting shapes. It can be used in a variety of ways and is often seen in furniture, art, and architectural designs. The unique pattern consists of curved lines that intersect each other, forming a cross-shaped opening within the design.

Cross Flexible 2D infill Designed for printing flexible filaments with a low infill percentage, the Cross infill pattern creates a pattern without any long straight horizontal lines.

What is Cross 3D Infill?

Cross 3D infill is a type of 3D printing technology that is used to fill up the spaces between layers of an object while creating curves and shapes in the process. This infill pattern produces curved, open-spaced cross shapes and can be used as a form of strengthening in certain applications.

Cross 3D Flexible 3D infill The undesirable vertical strength of the Cross pattern is eliminated in the Cross 3D pattern — with the caveat of longer slicing times.

What is the strongest infill pattern:

  • Triangles – Strong 2D infill

Triangles infill pattern is becoming an increasingly popular choice among 3D printing enthusiasts due to its strength, resilience and attractive aesthetic. Triangles infill can be used for a wide range of prints and projects, from everyday objects to complex structures that require higher levels of strength and durability.

  • Tri-hexagon – Strong 2D infill

Tri-Hexagons is another strong 2D infill pattern that’s very similar to the triangles pattern above. It has a unique structure compared to other infills, as it consists of three sets of parallel lines that are slightly offset from each other, allowing for a mix of both small triangles and large hexagons.

  • Cubic – Strong 3D infill

The Cubic pattern infill is suitable for everyday parts or functional parts which require strength along all axes. Its unique orientation ensures that overhangs are eliminated and it provides a high level of strength in every direction due to its cube-shape design. It also helps to reduce pillowing effect on the top layer because each cube is enclosed, long pockets of hot air cannot form, which reduces undesirable pillowing of the top layer.

What is the pattern for 100% infill?

When using a 100% infill pattern, the 3D printer uses solid layers of plastic or other material in the print. This type of pattern usually has a honeycomb or cubic design, filling in all of the empty space within the 3D model with material. While this can provide strength and durability to the final product.


All in all, the choice of a Cura infill should be thoughtfully evaluated with several elements factored into account. Strength and cost of filament, flexibility of your model, as well as smoothness of the surface must all be considered to choose an optimal pattern for any project.

Moreover, bear in mind that there are still other alternatives available aside from this selection.

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