How to 3D Model a Protractor in SelfCAD
In school, we learn about angles in subjects like mathematics, physics, and design. We often use tools like protractors to measure these angles. But what if you could design your own measuring tool? Not only would you understand how angles work better, but you would also learn new technology skills like 3D modeling. In this guide, we will show you, step-by-step, how to create a degree measuring tool in SelfCAD using only one shape — the cylinder.
Why SelfCAD is Perfect for the Classroom
If you’re going to teach students how to make 3d models, you need software that’s easy to use, accessible, and safe for school. This is where SelfCAD fits perfectly. It is an online and downloadable 3D design program good for both beginners and professionals.
Step-by-Step Guide of Creating Measuring Tool in SelfCAD
To begin, check out the interactive tutorial of SelfCAD. In summary, start by launching SelfCAD and open the workspace:
To create the basic shape of the degree measuring tool, we will use a cylinder. Select the Cylinder from the 3D Shapes:
Set the parameters as follows:
Activate the Polygon Selection and select the top polygon. Click on the Materials and select Custom Textures:
Click Add and Load Object from the tutorial:
Select UV from the Settings and select Unwrapping and Manual:
On the Transformation, select Scale and adjust the object by dragging the gizmos:
Tick the check mark to finalize the material:
Select another Cylinder and set the parameters as follows and then tick the check mark to finalize it:
Select the two objects and on the toolbar, click Stitch and Scoop and choose Difference. Select the mesh 7 to remove it:
Tick the check mark to finalize the difference:
Select another Cylinder from the 3D Shapes and set the parameters as follows:
Select all the objects and choose Difference from the Stitch and Scoop category on the toolbar. Select the mesh 24, the just created a cylinder to remove it:
Activate the Polygon Selection and select the shown polygons. Then on the right side panel click on the Inverse Selection:
You can then click on the Color picker and select the White color. Click Ok to confirm the color:
The measuring tool is finally ready:
Conclusion
Making a degree measuring tool from a single cylinder in SelfCAD is a rich classroom activity. It teaches geometry, design, and technology all in one. Students of all levels can take part, and teachers can adapt to the complexity. Best of all, students get to see their design come to life — whether on screen or in physical form through 3D printing. This not only reinforces learning but also builds confidence, creativity, and problem-solving skills.
Enjoy powerful modeling, rendering, and 3D printing tools without the steep learning curve.
Need to learn 3D modeling? Get started with interactive tutorials.