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STL

.STL Files

Stereolithography File

3D/CADmedium volume
What is a .STL file?

A file format native to stereolithography CAD software. STL files describe 3D object surfaces using triangular mesh.

Key Features of .STL Files

Common Uses:

3D Printing3D ModelingRapid PrototypingCAD Design

Category:

3D/CAD

Understanding .STL File Format

The .stl file extension belongs to the 3d/cad category and has become an essential format in modern digital workflows. Understanding how to properly work with these files can save you time and prevent compatibility issues.

When working with .stl files, it's important to choose the right software for your specific needs. Different applications offer varying levels of functionality, from basic viewing capabilities to advanced editing and conversion features.

Security Considerations

Always verify the source of .stl files before opening them. Use updated antivirus software and only download files from trusted sources. If you're unsure about a file's safety, scan it with your antivirus before opening.

How to Open .STL Files

Windows

  • Autodesk Fusion 360
  • Blender
  • MeshLab
  • 3D Builder

Mac

  • Blender
  • Autodesk Fusion 360
  • MeshLab
  • Preview

Mobile

  • STL Viewer apps
  • Autodesk mobile apps

Online

  • Thingiverse
  • STL viewers online
  • 3D file viewers
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Security Notice

Always download software from official sources. Scan files before opening to ensure safety.