What is SLDPRT file?

An SLDPRT file is a CAD file generated by SolidWorks software. It is a 3D file format that contains the 3D information of an object or “part”. Multiple SLDPRT files having compatible parts can be combined to create a single SLDASM assembly file. SLDPRT files can be opened using SmartCAM CAD/CAM Software by SolidWorks. SolidWorks application converters provide easy to convert tools for conversion of SLDPRT drawing files into neutral data formats such as TIFF, PDF, OR PDF/A.

What You Need to Know About SLDPRT Files in 3D Printing

SLDPRT files are the native file format for SolidWorks, one of the most popular computer-aided design (CAD) software programs. These files contain detailed design data, such as 3D models, materials, and other necessary information, all stored in a Microsoft Structured Storage format. This structure allows the files to be interpreted by 3D printers, making them an essential component for 3D printing in engineering and prototyping.

SolidWorks, created by Jon Hirschtick in the early 1990s, revolutionized CAD by offering a more intuitive, icon-based interface compared to older, more complex systems. Over the years, SLDPRT files have become critical in various industries, especially because they allow engineers to perform advanced tasks like draft angle analysis, interference testing, and finite element simulation. These features streamline the design and production process, enabling a smoother workflow from conceptualization to 3D printed prototype.

SLDPRT files remain widely used due to their flexibility and ability to support complex simulations, making them invaluable in product design and development today.

SLDPRT File Format

SLDPRT files are saved as binary files and their exact file format specifications are not available. Some APIs, however, provide the facility to read and convert SLDPRT files to other formats such as SLDPRT to DXF.

How to open SLDPRT file?

To open an SLDPRT file, you typically need software that can read SolidWorks files. Here’s how you can open it:

  1. Using SolidWorks

    • The easiest and most reliable way to open an SLDPRT file is by using SolidWorks, the CAD software it was designed for.
    • Steps:
      • Open SolidWorks on your computer.
      • Go to File → Open and select the SLDPRT file.
      • The file will open, and you can view, edit, and modify the 3D model.

  2. Using eDrawings Viewer (Free)

    • eDrawings Viewer is a free tool from SolidWorks that allows you to view and print SLDPRT files without having a full SolidWorks license.
    • Steps:
      • Download and install eDrawings Viewer from the official website.
      • Open the software and select File → Open, then choose your SLDPRT file.
      • You can view the model and rotate it to examine it in 3D.

  3. Using Autodesk Fusion 360

    • Fusion 360 can open SLDPRT files if you need a free alternative for viewing or basic editing.
    • Steps:
      • Open Fusion 360.
      • Go to File → Open → Choose your SLDPRT file.
      • You can inspect the file in 3D and make basic edits.

  4. Using Online Converters (for 3D Printing)

    • If you need the SLDPRT file for 3D printing and don’t have access to SolidWorks, you can use an online converter to convert the file to a more common format like STL or OBJ.
    • Websites like FreeCAD or GrabCAD offer conversion tools for this purpose.

  5. Using 3D Viewer on Windows (Basic Viewing)

    • Windows 10 and later have a built-in 3D Viewer app that can open and view SLDPRT files, though editing is not possible.
    • Steps:
      • Right-click on the SLDPRT file → Open With → 3D Viewer.
      • This lets you view the model in 3D.

SLDPRT Viewers

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