If you're interested in 3D modeling but don't want to invest in expensive software, there are plenty of free options available that can help you get started. Whether you're a hobbyist, a student, or just curious about the world of 3D design, these tools can help you explore your creativity without breaking the bank. Here's how to 3D model for free.

1. Blender: Blender is a powerful open-source 3D creation suite that is suitable for beginners and experienced users alike. It offers a wide range of tools for modeling, texturing, rendering, and more. With a dedicated community and plenty of tutorials available online, Blender is a great option for anyone looking to learn 3D modeling for free.

2. Tinkercad: Tinkercad is an easy-to-use browser-based 3D design and modeling tool that's perfect for beginners. It's a great starting point for those who are new to 3D design and want to create simple models for 3D printing or other projects. Tinkercad is intuitive and user-friendly, making it a popular choice for educators and students as well.

3. SketchUp Free: SketchUp is a well-known 3D modeling software that also offers a free version for hobbyists and beginners. While the free version has some limitations compared to the paid version, it's still a robust tool for creating 3D models for architecture, interior design, and more. SketchUp Free is a great way to get started with 3D modeling without spending any money.

4. FreeCAD: FreeCAD is a parametric 3D modeler made primarily to design real-life objects of any size. It's open-source and highly customizable, making it a great option for those who want to delve into the world of parametric modeling. FreeCAD is suited for users with some experience in 3D modeling, but it's a powerful free tool for those willing to put in the time to learn.

5. SculptGL: For those interested in digital sculpting, SculptGL is a free web-based sculpting tool that allows users to create organic shapes and models with ease. SculptGL is a great introduction to sculpting and is perfect for artists and designers who want to explore the world of 3D sculpting for free.

These are just a few examples of the many free 3D modeling tools available. Whether you're interested in creating 3D models for 3D printing, game design, or animation, there's a free tool out there that can help you get started. With dedication and practice, you can hone your skills and create impressive 3D models without spending a dime. So don't let the cost of software hold you back – start 3D modeling for free today!