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How Export To STL Solidworks


In the world of computer-aided design (CAD), SolidWorks stands out as one of the most popular and versatile tools for creating intricate 3D models. From mechanical parts to complex assemblies, SolidWorks provides a robust platform for engineers, designers, and artists to bring their ideas to life. One essential aspect of the design process is exporting models into various formats for prototyping, simulation, and collaboration. In this article, we will delve into the specifics of exporting to the STL format in SolidWorks, a crucial step for 3D printing and many other applications.

Understanding the STL Format


STL, which stands for Stereolithography, is a file format that represents 3D geometry using a collection of triangular facets. It’s a widely adopted format for 3D printing and rapid prototyping due to its simplicity and compatibility with most 3D printers and slicing software. STL files come in two variations: ASCII (text-based) and binary. While the ASCII format is human-readable and can be edited using a simple text editor, the binary format is more compact and efficient for larger models.

Preparing Your SolidWorks Model


Before diving into the export process, it’s crucial to ensure your SolidWorks model is well-prepared. This involves several key steps:

1. Check for Geometry Issues

Inspect your model for any geometry problems, such as gaps, overlaps, or self-intersections. These issues can lead to unexpected results during the 3D printing process. SolidWorks provides tools like “Check” and “Interference Detection” to help identify and resolve these problems.

2. Ensure Watertightness

STL files require watertight geometry, meaning there should be no open surfaces or gaps in your model. Use the “Knit Surface” or “Thicken” tools to close any gaps and ensure your model is a solid volume.

3. Set Proper Units

Make sure your model is designed in the correct units. This is essential to ensure the dimensions in your exported STL file match your intended physical object. You can set units through “Options” > “Document Properties” > “Units.”

4. Simplify Geometry (if necessary)

For Selective Laser Sintering, intricate and overly complex geometry can lead to longer print times and potential issues. Consider simplifying your model by removing unnecessary details while preserving its overall shape and function.

5. Apply Adequate Fillets and Chamfers

Sharp edges in your model can be problematic during the 3D printing process. Applying fillets or chamfers to edges can improve the printability of your model and prevent stress concentrations.

Exporting to STL


Now that your model is prepared, it’s time to export it to the STL format:

1. Save a Copy of Your Model

Before proceeding, create a copy of your SolidWorks model. This ensures you have a backup in case anything goes wrong during the export process.

2. Select the Part or Assembly

Open the model you want to export in SolidWorks. If you’re working with an assembly, you can choose to export the entire assembly or individual components.

3. Choose the Appropriate Export Method

SolidWorks offers two primary methods for exporting to STL: the “Save As” method and the “3D Printing” method.

Using the “Save As” Method:

  • a. Go to “File” > “Save As.”
  • b. In the “Save as type” dropdown menu, choose “STL (*.stl).”
  • c. Click “Options” to configure export settings.

Using the “3D Printing” Method:

  • a. Go to “File” > “Print 3D.”
  • b. Select the desired component or assembly from the “Graphics body or Part” list.
  • c. Configure settings such as mesh refinement and units.
  • d. Click “Save As STL” to proceed.

4. Adjust Export Settings

Regardless of the method you choose, you’ll have the opportunity to adjust export settings. These settings include:

  • Resolution/Tolerance: This determines the fineness of the mesh that approximates your model’s surfaces. A lower tolerance results in a higher resolution but larger file size.
  • Surface Smoothing: Enabling surface smoothing can help create smoother curves and surfaces in the exported STL file.
  • Binary or ASCII Format: Choose between the binary or ASCII format based on your preferences and requirements. Binary files are more compact, while ASCII files are human-readable and editable.

5. Save the STL File

Choose a destination on your computer to save the STL file. Be sure to give the file a meaningful name that reflects the model and any relevant details.

Tips for Successful 3D Printing


Exporting to STL is just the first step in the 3D printing process. To ensure a successful print, consider the following tips:

  • Check Scale: Verify that the dimensions in the STL file match the intended physical object’s dimensions. Some slicing software may interpret units differently.
  • Orientation: Orient the model in a way that minimizes overhangs and provides optimal support for the structure. Preview the print in slicing software to ensure it’s positioned correctly.
  • Support Structures: Depending on your design, you might need to add support structures to prevent sagging or collapsing during the printing process. Most slicing software can automatically generate supports.
  • Layer Height: Choose an appropriate layer height for your printer. Thinner layers result in smoother surfaces but may increase print time.
  • Print Bed Adhesion: Ensure your model adheres properly to the print bed. This might involve using materials like rafts or brims, especially for complex or tall prints.
  • Quality Settings: Adjust print settings like infill density, shell thickness, and print speed to achieve the desired balance between print quality and speed.

Exporting to STL in SolidWorks is a vital step in the journey from digital design to physical object. By following the steps outlined in this guide, you can ensure your 3D models are properly prepared and successfully exported to the STL format. With the right preparation and attention to detail, you’ll be well-equipped to take full advantage of the capabilities of 3D printing and bring your designs to life with precision and creativity.

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