So if vertical force was applied, the print would hold up very well, as each layer is very well-reinforced by the other layer.īut if you were to apply a horizontal force to the object, especially at a weak point, this infill would not hold up very well. However, where the honeycomb structure is strong in all directions, the triangle and rectilinear patterns are strong in one direction, but opposite in the other. The cross-section of this pattern would just look like a simple grid. Triangle and rectilinear infill is quite standard and is actually preferred for most printing as it is both strong and quick to print since it is just a lot of straight lines. Other very common infill patterns are triangle, rectilinear, and gyroid. ![]() High-stress parts like drone components: 60% or greater.Source: Triplaxis Recommended infill density for various models: There will rarely be an occasion where you’ll need more than 50% infill percentage, and for most parts, 20% or so infill percentages will suffice, especially if you use a strong pattern like the honeycomb.įor models that will come under a lot of stress and require lots of part strength, you may need higher infills.ĭrone parts, for example, may even require 100% infill density as they will come under lots of impact. Usually, you can get away with less infill percentage for everyday use. However, FDM printers take a long time to print this infill pattern as there is a lot of print head movement.Ī triangle infill or rectilinear infill would just require straight lines, whereas the hexagon infill requires more movement by comparison. Overall, the honeycomb pattern has the best strength-to-weight ratio and for this reason, many applications that require very light objects(like aerospace) utilize honeycomb patterns. ![]() The honeycomb infill pattern is also very material-efficient as it requires much less filament to print than other infill patterns. When you stack hexagons together as in a honeycomb, it lends a lot of compression strength from all 6 walls. The hexagonal shape lends strength from all directions to the honeycomb pattern, and it is modeled after the natural honeycomb structure of beehives. Under most circumstances, the strongest infill pattern is the honeycomb pattern. So what’s the strongest infill pattern? Let’s dig a little deeper. The strength of a 3D printed part depends on many factors: the type of filament material you use, the shell thickness, the layer height, and of course, the infill.
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