Some models may benefit from rotating the fill angle to ensure the optimal direction of the extrusion. Infill extrusions that run adjacent to perimeters are liable to de-laminate under stress. Zero will disable this option.įill angle - By default the infill pattern runs at 45° to the model to provide the best adhesion to wall structures. Solid infill every n layers - Forces a solid fill pattern on the specified layers. Only infill where needed - Slic3r will analyse the model and choose where infill is required in order to support internal ceilings and overhangs. This can be used to speed up print times where the missing infill is acceptable. Infill every n layers - Will produce sparse vertical infill by skipping a set number of layers. Slic3r contains several advanced infill settings which can help produce better extrusions. There are several 3D patterns available for 3d infill as well.Ĭubic infill is a 3D cube pattern with each cube stacked on corners.ģD Honeycomb is a true honeycomb pattern. Top to Bottom: Honeycomb, Concentric, Line, Rectilinear, Hilbert Curve, Archimedean Chords, Octagram Spiral Note that this is only indicative, as model complexity and other factors will affect time and material. The numbers given in brackets below each figure are a rough estimate of material used and time taken for a simple 20mm cube model 2. Slic3r offers several infill patterns, four regular, and three more exotic flavours. It can be inferred that a more complex pattern will require more moves, and hence take more time and material. There are several considerations when choosing an infill pattern: object strength, time and material, personal preference. Honeycomb gives the most strength but is slower than both rectilinear or line. The more exotic fill methods are usually too slow and unnecessarily complex for most use cases, and so most of the time the infill pattern is either rectilinear, line, or honeycomb. Choosing a Fill pattern will depend on the kind of model, the desired structural strength, print speed, and personal taste. Slic3r offers several fill patterns which will be discussed in more depth in section - Infill Choices. A value of 20% is usually the minimum required to support flat ceilings. Instead, most models can be filled with less material which is then sandwiched between layers filled at 100% (see Solid layers above).Ī density value of 40% is enough to give almost all models good mechanical strength. it makes no sense to 100% fill the model with plastic, this would be a waste of material and take a long time. Because the intermediate layers are likely to be filled with a pattern set less than 100% then the covering layers will have to bridge this pattern and this can require more than one pass to cover completely.įill density is from 0% to 100%. For the bottom layers the important factor to consider is how the surface will look should there be a mistake whilst laying down the first layer, and for this reason it is recommended to have at least two bottom layers.Ī similar consideration is required for the top layers. The upper and lowermost layers that sandwich the model are filled with a Solid layers pattern. Unless the model requires single width walls it is generally recommended to have a minimum of two perimeters as this gives some insurance that if a section of the perimeter is not printed correctly then the second perimeter will help cover it. Perimeters defines the minimum number of vertical shells (i.e. A later goal will be to strike a balance between layer height, the speed of the printer, and the quality of the resulting print. Print speed - Shorter layers will result in smoother prints but each print will take longer, simply because the extruder must trace the pattern more times. Aesthetics plays a role here, but also the type of model, for example, a mechanical part may not need such a high resolution finish, whereas a presentation piece may do so. There are several factors that influence how high each layer should be:ĭesired resolution - Lower layer height should result in prints with less noticeable ribs or bands, as each layer is smaller. Layer height is the thickness of each layer, and it is the step along the vertical axis taken before extruding a new layer atop the previous one. Print Settings: Layers and Perimeters General.
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