File Extension Search

.stl File Extension

Developer: N/A
File type: Stereolithography File
You're here because you have a file that has a file extension ending in .stl. Files with the file extension .stl can only be launched by certain applications. It's possible that .stl files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .stl file?

A stereolithography file is generally classified as a CAD file used as the standard stereolithography design format, in which stereolithography is known as technology developed for rapid prototyping processes implemented for the production and development of digital 3D components of a CAD project. The content of these stereolithography files may consist of digital 3D design objects deployed as elements of a master model CAD project for the creation of multiple design prototype options. These stereolithography files are developed for storing CAD files in a standardized format integrated with specifications which allow the data to be read and interpreted by many CAD programs. These stereolithography files are integrated with CAD data compilation specifications used for the STL file format, and certain encoding standards are also implemented into the content of these stereolithography files for storing it in the STL file format. These stereolithography files are affixed with the .stl extension and can be opened and edited using the Dassault Systemes CATIA software among other CAD programs.

how to open a .stl file?

Launch a .stl file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .stl file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .stl files aren't yet associated with it. In this case, when you try to open a .stl file, you can tell Windows which application is the correct one for that file. From then on, opening a  .stl file will open the correct application. Click here to fix .stl file association errors

applications that open a .stl file

Dassault Systemes CATIA

Dassault Systemes CATIA

Dassault Systemes CATIA is an application that was programmed using C++. This software is used to design aircrafts, such as the mirage jet fighter. The CATIA program can be used in designing automotives, ships, plant designs and packaged goods. It can also be used in architecture, life science, construction, designing of new gadgets and industrial equipment. Catia can render 3D parts, sheet metal, tooling parts of mechanical assemblies in every detail, and this software aids in intelligent engineering systems. This software runs in Microsoft platforms like Windows Xp, Windows Vista and Windows 7. The Hard Drive should have at least 2 GB of available storage space.
AutoCAD 2013

AutoCAD 2013

The new version of the AutoCAD software which is the AutoCAD 2013, has features like the Section and Details View which has a model documentation tab that provides faster access. There is Full, offset, half or aligned to hoose from the section methods. Usrs can specify what boundaries they prefer which can either be rectangular or circular for the details view. The software also offers Strike-thru Text used for providing texts in documents. Mtext, Mleaders, Dimensions, Tables and ArcText has new strikethrough styles for them. The Autodesk 360 Connectivity feature of the software allows synchronization of files including the syncing of drawings and folders with the user's online account which is accessed directly within the software which enables file sharing with other users of Autodesk who has an online account, and users can also share their designs through their social media accounts. The software also comes with a PressPull too that is used to extrude and offset curves to create surfaces and solids. It also lets the user select multiple object using a single PRessPull operation.


Autodesk offers a wide variety of 3D design, engineering and entertainment softwares. Its products and features are used in various industries of architecture, engineering, building, manufacturing and even media and entertainment. They offer products that aids in designing, visualization, and simulation of an artist's idead before they are created or even built. Autodesk softwares have the ability to create visual effect for movies, design buildings that gives off energy, model an electric car and what kind of battery it has for power support, the work of 3D software has boundless capabilities. Autodesk now also provides apps for iPhone, iPad, iPod, and Android phones for professional and amateur designers, engineering and architecture students, homeowners, real estate developers or anyone who has interest in creating their own ideas and are now able to share it to others. Autodesk products are categorized as AutoCAD products, Inventor products, Revit products, 3ds Max products, Maya producrs, Autodesk Vault, Autodesk Simulation, Autodesk sketchbooks, Autodesk Constructware and many others.

a word of warning

Be careful not to rename the extension on .stl files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .stl. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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