Free 3D modeling programs serve different ages, skill levels, and project types. These four options use similar core ideas but vary in precision, workflow, and learning curve.
If you want to make your own models, there are free programs for many skill levels and ages. They use similar principles; more advanced programs mainly add capability.
Tinkercad
Tinkercad is a good starting point for someone who has never used 3D modeling software. Think of it as digital LEGO: easy to grasp, useful for learning core concepts, and quick to outgrow as projects become more demanding. Most people can get started in about 15 minutes. My son made the character shown here when he was seven.
- Free and web-based, with no software to install; an internet connection is required.
- Designed for beginners and children around six and up; many schools use it.
- Good for science projects, figurines, dollhouse furniture, and artistic designs without strict dimensional requirements.
- Includes self-guided, interactive lessons.
SketchUp
I used SketchUp for years and designed many projects with it. The table design shown here was for my kids. SketchUp suits hobbyists who want an accessible interface and useful add-ons, especially when a project needs some dimensional accuracy without the full complexity of a traditional CAD tool.
- Free for personal use.
- Suitable for beginning designers.
- Web-based, with paid local capabilities for people without reliable internet.
- A distinctive interface with a relatively low learning curve.
- Tools and add-ons support different kinds of modeling.
Fusion 360
Fusion 360 is the program I use most. I often design replacement parts and functional household items. It's a traditional modeling program used in engineering organizations, and it is a good fit for a serious hobby or professional work.
- Free for personal or entrepreneur use, subject to Autodesk's current terms.
- Best for intermediate designers or beginners willing to follow tutorials.
- A local application that supports offline editing, with cloud-based storage.
- Moderate learning curve and strong educational resources.
- Good for precise dimensions and assemblies made from multiple parts.
Blender
I have less personal experience with Blender, but many friends use it for organic shapes. It is capable of serious work in film, computer graphics, and art, and can also be used to create printable objects.
- Free.
- Useful for people interested in CGI and film production.
- Intuitive in some workflows, with a moderate-to-steep learning curve.