How do you slice 3D models for complex or intricate designs and features?

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How do you slice 3D models for complex or intricate designs and features? Slicing is the process of converting a 3D model into a series of instructions for a 3D printer. It determines how the printer will move, extrude, and retract the filament to create the desired object. Slicing can also affect the quality, speed, and cost of your 3D printing project. In this article, you will learn how to slice 3D models for different 3D printing resolutions and how to optimize your settings for the best results.

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Nathan Hom

System Engineer at Lockheed Martin

1 What is 3D printing resolution?

3D printing resolution is the level of detail and accuracy that a 3D printer can produce. It is measured by the layer height, which is the thickness of each layer of filament that the printer deposits. The lower the layer height, the higher the resolution and the smoother the surface of the printed object. However, higher resolution also means longer printing time and more material consumption. Therefore, you need to balance your resolution needs with your time and budget constraints.

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Nathan Hom

System Engineer at Lockheed Martin
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I would probably note this article is probably referring to FDM style printers rather than resin printers that don't use filament. SLA and DLP have similar settings, but they work using a completely different mechanic where resin cures layer by layer as it is exposed to a light source.

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2 How to choose a slicing software?

Slicing software is the program that converts your 3D model into a printable file format, such as G-code or STL. There are many slicing software options available, each with its own features and advantages. Some of the most popular ones are Cura, Simplify3D, PrusaSlicer, and Slic3r. You should choose a slicing software that is compatible with your 3D printer model and that offers the settings and functions that you need for your project. You can also compare different slicing software by reading reviews, watching tutorials, or testing them out yourself.

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Nathan Hom

System Engineer at Lockheed Martin
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Most printers will reccomend or come prepackaged with a slicing software. Check a printer 's user manual before looking for external slicing software

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3 How to adjust the layer height?

The layer height is one of the most important settings that affects the resolution of your 3D print. You can adjust the layer height in your slicing software by entering a value in millimeters or selecting a preset option. The typical range of layer heights is from 0.05 mm to 0.3 mm, depending on the nozzle size and the printer capabilities. Generally, lower layer heights produce finer details and smoother surfaces, but they also increase the printing time and the risk of errors. Higher layer heights produce faster prints and stronger structures, but they also reduce the quality and the aesthetics.

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4 How to use adaptive layer height?

Adaptive layer height is a feature that some slicing software offer to automatically adjust the layer height according to the complexity and curvature of the 3D model. This means that you can have different layer heights for different parts of the object, depending on the level of detail required. For example, you can have lower layer heights for intricate features and higher layer heights for flat or simple areas. This can save you time and material while maintaining a high resolution where it matters most.

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5 How to optimize other slicing settings?

When printing with a 3D printer, besides the layer height, there are other slicing settings that can influence the resolution of your 3D print. Infill, for example, is the percentage of material that fills the inside of the object and can affect the strength and durability. Shell is the number of layers that form the outer walls of the object and can determine the rigidity and smoothness. Support is additional material that supports overhanging or bridging parts of the object and prevents sagging or deformation. Retraction is when the extruder pulls back the filament when it is not needed, which can prevent stringing or oozing, but too much retraction can cause under-extrusion or clogging. It is best to experiment with different values and combinations of these settings to find an optimal balance for your project.

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Cody Hufstetler

Product Engineer at Luxium Solutions
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Another way to increase part detail is by choosing a smaller nozzle size. This will also increase print time, but much greater detail can be achieved with a smaller nozzle. However, this does also increase the chance of clogs, which could make the print less reliable.

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Nathan Hom

System Engineer at Lockheed Martin
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Part detail can also be affected by the orientation of your part. FDM printers will have a different accuracy in the horizontal and the vertical axis. In addition certain features may print better in one orientation than another like holes. It should also be noted that part oreintation while printing will affect part strength. A part will be strong against loads is parallel to its layers or moment is nornal to its layer.

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Jordan Miller

Mechanical Engineer at Ultra Maritime
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Other things that I’ve done also are: 1. Altering extrusion flow %, especially for smaller detail/thin wall conditions. Sometimes the material “squishes” and creates a melted ice cream look, if you don’t carefully tune a section. 2. Lower temperature, this is especially true for smaller prints that have small features and/or not a large XY-surface area, making layer times short and not allowing the molten plastic from the previous layer to properly cool. It’s not a 1-size fits all approach. 3. Combing mode can help “wipe the nose” of the nozzle from any molten plastic so that it does not string across the travel move.

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How do you slice 3D models for complex or intricate designs and features?

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2

3

4

5

1 What is 3D printing resolution?

2 How to choose a slicing software?

3 How to adjust the layer height?

4 How to use adaptive layer height?

5 How to optimize other slicing settings?

3D Printing

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How do you slice 3D models for complex or intricate designs and features?

1

2

3

4

5

1 What is 3D printing resolution?

2 How to choose a slicing software?

3 How to adjust the layer height?

4 How to use adaptive layer height?

5 How to optimize other slicing settings?

3D Printing

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