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31 votes
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What are the advantages of gyroid infill?

From this reference you can read that: A gyroid is a naturally occurring structure which be found in butterfly wings and even within membranes inside cells. In 2017, MIT researchers discovered ...
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30 votes
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Different infill in the same part

This answer explains that you can have different infill within the same part. Firstly the implementation in Ultimaker Cura is described, secondly how you can do this in Slic3r. Ultimaker Cura I've ...
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23 votes

What are the advantages of gyroid infill?

0scar gave a great answer, but I wanted to add to it. Stefan of CNC Kitchen does a lot of 3D printer technique testing. He covered the gyroid and other patterns. While there's a difference in ...
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14 votes

What are the advantages of gyroid infill?

This answer builds on to both 0scar and tedder42's answer: Martin's experiment was about shear strength, where as Stefan of CNC Kitchen's experiment was about compressive strength on 2 directions. ...
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  • 241
12 votes

What are the advantages of gyroid infill?

About a decade ago, we looked at the 'Gyroid infill structure' (which we called sheet solid). We looked at it as a linear-elastic solid and as possible bone scaffold design: https://www.sciencedirect....
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11 votes

Slic3r - Can I add new infill patterns?

Although the core of Slic3r is written in C++ a lot of other components such as infill generation are written in Perl. Since Slic3r is open source there is nothing stopping you from writing your own ...
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9 votes

Different infill in the same part

I don't particularly recommend the following, but it may be easier than 0scar's answer (which I would recommend implementing if you use Cura). Slice your object twice, once at the lower infill and ...
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8 votes
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How are infill paths connect to form an efficient path that respect the object's geometry?

The answer to this is pretty much basic algebra: The software tackles the problem by using a set of functions that generate the infill pattern for ALL the build volume, then discard anything outside ...
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6 votes

Choose infill percentage

I don't believe that slicing engines create any sort of solid model that would be useful for CAD simulation. When a slicing engine slices a 3D model, it's goal is to spit out the preferred machine ...
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6 votes
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Infill pattern comparison

Hex grids are used for different reasons than triangular grids (such as you often see on bridges and roof systems). Triangles are especially good at being rigid, while hex grids are very material-...
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6 votes

Different infill in the same part

While you definitely can do this with custom slicing settings, if the "infill" is a design constraint necessary for the part to properly function, I prefer making it a part of the design rather than ...
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5 votes

Does Cura have an algorithm for any infill percentage or does it just have specific patterns?

I fear I'm going to deny your question. The infil percentage and the infil pattern are two orthogonal properties, both of which contribute to the strength, density, mass, and print time of an object. ...
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5 votes
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Uniform squishy infill

As the rubber stamp needs to be soft in one axis for the whole area, you could use an infill that causes the same softness in all directions, but is sliced as such that the stamp experiences the same ...
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5 votes
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Ender-3 Pro - PLA mid-layer warping (layer separation) - salvageable?

One hundred percent infill is not necessarily stronger than lower values. By having such a high infill figure, the forces on the model as it cools are magnified and not in a particularly good manner. ...
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4 votes
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Square and parallel infill patterns

... does Square really benefit a whole lot over parallel? That would depend by the definition of "a whole lot", of course! :) Strength Generally speaking, the variable you want to operate to tweak ...
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  • 4,537
4 votes
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Does Cura have an algorithm for any infill percentage or does it just have specific patterns?

Infill serves two main purposes. These don't seem to map particularly well to the available controls. Adding strength to the part The more plastic your part has inside, the stronger it will be. At ...
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4 votes
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What is this weird support line doing in this print?

I do not know the Qidi slicer, but if you look closely, you will see this line is thinner than the normal support infill lines. You could try to visualize the G-code in a viewer, usually this can be ...
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4 votes
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Infill is rough - how to enhance?

From your comments can be read that you print infill at 200 mm/s. Know that 200 mm/s is ridiculously fast (like high travelling speed), close to the limits of printing on certain machines (...
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4 votes

Delamination issue Ender 3 Pro PLA

Just to update on this, it wasn't directly a configuration setting, it was actually a blockage in the hotend (I suspect because the PTFE tube had become unseated from some black filament that was ...
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3 votes

Ultimaker Cura infill issues (weird vertical pillars due to underextrusion)

This problem is most commonly caused by infill speeds which are too high. Instead of printing lines, the filament is caught on one of the lines of the previous layer, leaves a blob there and only ...
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3 votes
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How to slice this wing so it has a smooth infill like perimeters

I found a great solution! In Cura, there is a setting under Shell called Horizontal Expansion. What this does is it controls the distance between the two perimeters. A negative value in this field ...
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3 votes

Choose infill percentage

Since I am not able to comment on this question yet, I thought I would provide an answer in addition to the already helpful insight provided. If the question in general is regarding infill percentage,...
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  • 441
3 votes

Unidentified problem in printing

Okay so one problem at a time.. You have several issues. 1 You will likely note while it prints, the pillar will almost catch and sometimes twang as the layers get higher and higher. Issue here is ...
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  • 3,003
3 votes

Thick wall or solid part of an otherwise medium-fill part

I'd suggest creating a hollow tube with ~1 to 1.5 mm walls. Then to increase the strength design your own internal structure rather than relying on the slicer to fill the part. This takes longer ...
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  • 1,845
3 votes

First layer - not even infill

You're not sticking to your bed. Adjust your bed height. You are too far. Otherwise you are going too fast and or too hot. Calibrate the bed. Reduce speed. Then adjust temps. Also could be material ...
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  • 3,003
3 votes

How to add internal supports/localized infill, preferably in Cura?

In Slic3r, this can be solved by selecting a suited infill pattern and density, while enabling the only infill where needed-option: Personally, I have found the concentric infill pattern to provide ...
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3 votes

How to add internal supports/localized infill, preferably in Cura?

I'm not really sure if i get you right but it seems like you gotta switch on support material. That's all. Correct me if I'm wrong but it sounds like very common situation where some parts are hanging ...
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  • 3,438
3 votes

How are infill paths connect to form an efficient path that respect the object's geometry?

simple answer is math but you know that for sure more descriptive answer (but still simple and with no math) is more or less as follows slice an object with a plane to form (calculate) outline ...
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  • 3,438
3 votes

Using multiple infill types within one model

To achieve additional localised stiffness, you can also insert small voids (gaps) inside the model. These become double thickness walls once sliced and can be used to support things like screw holes. ...
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3 votes

slic3r: Can I vary the infill percentage for different heights of my model?

Your question is very similar to Different infill in the same part and Using multiple infill types within one model [duplicate]. The difference is that you specifically ask for Slic3r and a variation ...
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