If you work with 3D modeling or CAD software, chances are you've come across STP files. STP, or Standard for the Exchange of Product Data, is a widely used file format for 3D models and technical data. While some proprietary software packages can handle STP files, not everyone has access to expensive software. That's where free software comes in handy. In this article, we'll explore the top 5 free tools for opening and editing STP files.

1. FreeCAD

FreeCAD is a popular open-source parametric 3D CAD modeler. It supports the import and export of various file formats, including STP. With FreeCAD, you can not only view STP files but also modify and edit them using a wide range of tools and features. Whether you're a beginner or an experienced CAD user, FreeCAD is a versatile and powerful choice for working with STP files.

2. eDrawings Viewer

eDrawings Viewer is a lightweight, easy-to-use software for viewing and sharing 3D models and 2D drawings. It supports the viewing of STP files, as well as many other file formats commonly used in the CAD industry. With eDrawings Viewer, you can rotate, zoom, and section your STP files to get a closer look at the details. It's a great choice for anyone who needs a simple and efficient STP file viewer.

3. Autodesk Fusion 360

Autodesk Fusion 360 is a cloud-based 3D CAD, CAM, and CAE platform that offers free access for personal, hobbyist, and educational use. While it's not completely free for commercial use, Fusion 360 provides a powerful solution for working with STP files. With Fusion 360, you can import, modify, and analyze STP files, as well as collaborate with others on your designs. If you're a student, educator, or hobbyist, Fusion 360 is a fantastic option for working with STP files.

4. LibreCAD

LibreCAD is a free and open-source 2D CAD application that also supports the import of 3D models, including STP files. While it may not offer the same level of functionality as some other software packages, LibreCAD is a great choice for those who primarily work with 2D drafting and occasionally need to view or edit 3D models. If you're looking for a lightweight and straightforward solution for opening and editing STP files, give LibreCAD a try.

5. 3D-Tool Free Viewer

3D-Tool Free Viewer is a standalone 3D viewing and conversion software that supports a wide range of file formats, including STP. With 3D-Tool Free Viewer, you can visualize and analyze your STP files, as well as take measurements and create cross-sections. It's a handy tool for anyone who needs a dedicated STP file viewer with advanced visualization capabilities.

In conclusion, there are plenty of free software options for opening and editing STP files. Whether you're a professional engineer, a student, or a hobbyist, you can find a suitable tool for your needs without breaking the bank. Give these top 5 tools a try and see which one works best for you!