Are you a 3D modeling enthusiast looking to edit your STL files without breaking the bank? Look no further! In this article, we will explore the best free STL editor online that will help you modify your 3D models with ease.

1. Tinkercad: Tinkercad is a popular online 3D design and 3D printing tool that offers a user-friendly interface for both beginners and advanced users. It allows you to import and edit your STL files and offers a range of tools to modify and enhance your models.

2. FreeCAD: FreeCAD is a powerful open-source parametric 3D modeler designed for creating real-life objects. It comes with a wide range of features for 3D modeling, drawing, and design and also supports the editing of STL files.

3. Meshmixer: Meshmixer is a free tool from Autodesk that offers a plethora of features for editing and refining 3D meshes. It allows users to sculpt, texture, and remesh 3D models, making it a great choice for editing STL files.

4. 3D Slash: 3D Slash is a simple and intuitive 3D modeling tool that is perfect for beginners. It offers a voxel-based approach to modeling and is a great choice for editing and customizing STL files.

Now that you know about these awesome free online STL editors, it's time to start editing your 3D models! Whether you want to make small modifications or completely transform your STL files, these tools have got you covered. Say goodbye to expensive software and start editing your STL files for free today!