When it comes to viewing 3D models in STP (Standard for the Exchange of Product) file format, having the right software is essential. Whether you’re a designer, engineer, or hobbyist, accessing and visualizing your 3D designs is crucial. Here are 5 free STP file viewers that can help you easily open and explore your 3D models:

1. FreeCAD: FreeCAD is an open-source parametric 3D CAD modeler that supports STP files. It offers a range of features for designing and analyzing your 3D models, making it a great choice for engineers and designers.

2. eDrawings Viewer: Developed by SOLIDWORKS, eDrawings Viewer is a free software that allows you to view and analyze 3D models in various file formats, including STP. It offers intuitive and easy-to-use tools for measuring and annotating your designs.

3. Autodesk Viewer: Autodesk Viewer is a web-based tool that enables you to upload and view 3D models in STP format directly in your browser. With its simple interface and powerful visualization capabilities, it’s a convenient choice for quick access to your designs.

4. Fusion 360: Although primarily known as a comprehensive 3D CAD, CAM, and CAE software, Fusion 360 offers a free plan for enthusiasts and hobbyists, allowing them to view and explore 3D models in STP format. Its cloud-based functionality also makes it easy to access your designs from anywhere.

5. Onshape: Onshape is a cloud-based CAD software that offers a free plan for viewing and editing 3D models, including STP files. With its collaboration features and real-time design capabilities, Onshape is a great option for teams and individuals looking to work on 3D designs together.

Whether you’re looking for a standalone STP file viewer or a more comprehensive 3D design software with viewing capabilities, these free options provide easy access to your 3D models. Try them out and find the one that best suits your needs.