How to Import and Texture a 3D Model of Lungs in SelfCAD

Have you ever wished you could hold a human lung in your hand while studying it in class? What if your students could rotate, zoom in, and even touch the parts of the respiratory system they are learning about?

This is now possible with 3D modeling. In today’s classrooms, we are no longer limited to textbook pictures. With tools like SelfCAD, we can create, edit, and view realistic 3D models of human organs-right from a computer browser.

In this article, you will learn how to import a pre-sculpted lung model, add realistic texture to it, and use it effectively in classroom teaching. This guide is specifically designed for teachers, students, and education enthusiasts who want to make learning more interactive, engaging, and hands-on. 

Why Use 3D Models in Education?

Before we begin with the how-to part, let’s talk about the why.

Learning Becomes Visual and Interactive

Many topics in science, especially human anatomy, are hard to understand through words alone. 3D models make learning visual and interactive. Instead of just reading about lungs or looking at a 2D diagram, students can see, rotate, and zoom in on the actual shape.

Builds Curiosity and Engagement

Students become more curious when they can interact with the topic. Holding a 3D-printed lung or exploring its parts on-screen grabs attention and encourages questions and deeper thinking.

Helps with Memory and Understanding

When students learn by seeing and doing, they understand and remember better. A textured model of the lungs, showing bronchi and surface structure, helps them relate what they learn to the real human body.

Promotes Active Learning

3D modeling turns students from passive listeners into active creators. They can build models, explore them, or even create their own versions.

Getting Started with SelfCAD

Getting started with SelfCAD is quick and easy. Just follow these steps:

1. Go to the official website: www.selfcad.com
2. Create an account: Click “Sign Up” and register as a student, teacher, or hobbyist.
3. Open the 3D Editor: Once logged in, click “Launch Editor.” This opens the workspace where you’ll model.

In just a few minutes, you’ll be inside the SelfCAD environment, ready to begin creating.

SelfCAD is incredibly easy to learn, even if you’ve never tried 3D modeling before. The platform is designed with beginners in mind, offering a clean interface and simple tools that are easy to understand. One of the best parts is that SelfCAD provides step-by-step tutorials. These tutorials walk you through everything from creating basic shapes to building complex models making it feel like you’re learning with a teacher by your side.

Step by step: How to Import a Pre-Sculpted Lung Model in SelfCAD

A pre-sculpted model refers to a shape that has been created using 3D software, essentially pre-defining the basic structure of the lungs. Instead of starting from scratch, you import this model and edit or texture it. You can find pre-sculpted models online from websites like Thingiverse, MyMiniFactory, CGTrader and Sketchfab. Ensure the model is in STL or OBJ format, as SelfCAD supports these file formats. Check out the interactive tutorial to learn the process.

To begin, start by launching SelfCAD and open the workspace:

The next step is to import the components. Click on the Import option on the File menu on the top toolbar:

Click Load the object then use the Move tool from the toolbar to move the object by setting X to -50: 

Set Z also to -25 and then click on the Color Picker and select the pink color. Click ok to confirm the color:

The next step is to add the textures. Activate the Polygon selection on the right side panel. Select the highlighted polygon and click on the Materials. Set the materials to textures and set it to custom:

Click add to select the custom texture. Click load the object from the tutorial and select use the object. Tick the check mark to finalize the texture:

Click on the Import option on the File menu on the top toolbar:

Click the load object from the tutorial and select the other lung. Use the Move tool to position the it as follows by setting X to 60:

Select the Color Picker and select the pink color. Click ok to confirm the color:

Click Import on the file menu on the top toolbar. Click load object from the tutorial to load the object:

Use the Move tool to position the trachea on its position by setting Y to 121. On the Color picker select the Maroon color and click ok to confirm the color:

Select all the objects on the grid. On the top toolbar on Edit menu, select Union to combine the objects:

There you go, you have successfully textured the lungs using SelfCAD:

 

Using the Model in a Classroom

Once your lung model is fully imported and textured in SelfCAD, it’s time to bring it into the classroom environment. A finished 3D model can be a powerful teaching tool, especially in subjects like biology, where visualizing organs helps students understand complex concepts better.

You can begin by using the model during your lessons to explain lung anatomy. Instead of pointing to a flat diagram in a book, use the 3D model to rotate, zoom, and highlight specific parts, such as the left and right lungs, the bronchi, and the alveoli. This interactive visual presentation not only helps students see how the lungs are shaped but also understand how air flows through them.

After your demonstration, give students a chance to interact with the model themselves. If they have access to computers or tablets, let them explore the model in SelfCAD. They can rotate it, zoom in, and identify different parts. To make it more engaging, assign a short task, such as labeling the different parts or writing a brief description of their functions.

Here are some classroom ideas you can try:

• Student Exploration: Allow each student or group to navigate the model and identify key parts of the lung.
• Short Assignments: Ask students to add text labels or write down what happens to air as it passes through the respiratory system.
• Quick Presentations: Have students take turns explaining one part of the lung using the 3D model as a visual aid.

You can also turn this into a group activity. Divide students into small teams and give each team a different responsibility:

• One group could work on coloring the bronchi and labeling them.
• Another could add texture to represent the alveoli.
• A third group might research and explain the gas exchange process in relation to the model.

If your school has a 3D printer, you can print the lung model and provide students with a tangible object to hold. This adds a whole new layer of engagement. Holding the model while learning helps students make a stronger connection between the visual and the real-world structure. You can use these printed models for class discussions, science projects, or even school exhibitions.

Using a 3D model in class transforms the way students experience biology. They’re no longer just reading about the lungs—they’re exploring them, building them, and presenting them. This hands-on approach deepens understanding, improves memory, and makes learning more enjoyable and meaningful.

Tips for Students and Educators

Keep Models Simple

Too much detail can slow computers. Start with a basic shape, then slowly add texture.

Save Progress Regularly

SelfCAD lets you save your project online. Always click “Save” after big changes.

Encourage Creativity

Let students change the color, scale, or pose of the model. Creativity helps with engagement.

Use 3D Modeling Across Subjects

Besides biology, 3D modeling is great for:

• Geography (terrain models)

 

• Math (shapes and volume)

• Art (digital sculpture)
   
• History (rebuilding ancient tools or buildings)

Conclusion

3D modeling is no longer just for engineers or designers-it’s for every classroom. Whether you're teaching lung anatomy in biology or helping students understand how the human body works, tools like SelfCAD make learning interactive, visual, and fun.

By importing a pre-sculpted lung and adding texture, you're not just showing students what lungs look like—you’re helping them engage deeply with the subject.

So take the first step today. Log into SelfCAD, import your model, and begin shaping the future of education—one 3D lesson at a time.

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Enjoy powerful modeling, rendering, and 3D printing tools without the steep learning curve.

Need to learn 3D modeling? Get started with interactive tutorials.