How to create 3D models using CAD

Computer-Aided Design (CAD) is a powerful tool used by engineers, architects, and designers to create 3D models of their designs. With the help of CAD software, creating 3D models has become much easier and more efficient, allowing for faster iteration and more accurate representation of designs.

In this article, we’ll walk through the method for creating 3D models using CAD. First we know about What is 3D-Model and CAD.

What is CAD?

Digital technology called computer-aided design (CAD) is used to design and model systems and objects. It is an essential tool for engineers, architects, and designers since it requires using specialist software to produce 2D and 3D representations of designs.

The software comes with a variety of tools that aid in building highly accurate and realistic models, such as drawing, drafting, and simulation tools. Using CAD has a number of benefits over conventional manual approaches, including quicker and more effective design, simpler teamwork, and more accuracy.

Organizations can now collaborate on projects regardless of their physical location thanks to the ability to share digital models and data among teams.

What is 3d-Modelling?

3D modeling is the process of creating three-dimensional digital objects using specialized software. This technology allows designers and artists to create detailed and accurate models for a variety of purposes, including animation, product design, and architectural visualization.

The process involves creating a digital wireframe and adding details and textures to make the model look more realistic. 3D modeling software provides a range of tools, such as sketching, drafting, and simulation tools, that make it easier to create and manipulate the model.

The ability to view the model from any angle and share digital models and data with others has made 3D modeling an essential tool in many industries, allowing for greater collaboration and efficiency in the design process. Overall, 3D modeling has had a significant impact on the visualization and design of objects and systems.

Steps to Create a 3d-Model in CAD Software:

  • Choose your CAD software 

The first step in creating 3D models using CAD is to choose the software you want to use. There are many CAD programs available, ranging from free and open-source programs to expensive, professional-grade software. Some of the most popular CAD programs include AutoCAD, SolidWorks, and Fusion 360. Consider your needs and budget when choosing a CAD program, as well as the level of experience you have with using CAD software.

  • Gather your materials

Before you start creating your 3D model, you’ll need to gather any relevant materials and information. This may include drawings, sketches, specifications, or photographs of the object you want to model. Having this information will help you create a more accurate representation of your design.

  • Create a 2D sketch

Once you have your materials gathered, the next step is to create a 2D sketch of your design. This will serve as the foundation for your 3D model. Use the tools in your CAD program to draw the outlines and details of your design. Be sure to pay attention to the dimensions and proportions of your design, as these will be important when creating your 3D model.

  • Extrude the 2D sketch

With your 2D sketch complete, the next step is to extrude it into a 3D model. Most CAD programs have an “Extrude” tool that allows you to take your 2D sketch and turn it into a 3D object by adding depth and height. Depending on your software, you may be able to choose from several different extrusion methods, such as linear extrusion, revolve extrusion, or sweep extrusion.

  • Add details and features

With your 3D model created, the next step is to add details and features to it. This may include creating holes, adding text or labels, or creating cutaways to show the internal parts of your design. You can also add materials and textures to your model to make it more realistic.

  • Save and export your model

Once you’re satisfied with your 3D model, the final step is to save and export it. Depending on what you want to do with your model, you may need to export it in a specific file format, such as STL for 3D printing or OBJ for use in another 3D modeling program.

List of CAD Software

There are many different 3D CAD (Computer-Aided Design) software programs available, each with its own unique features and capabilities. Here is a list of some of the most popular 3D CAD software programs:

  1. AutoCAD: One of the most widely used CAD programs, AutoCAD is a 2D and 3D design software used by architects, engineers, and designers.
  2. SolidWorks: A professional-grade CAD software used for product design and engineering.
  3. SketchUp: A user-friendly CAD software used by architects, designers, and hobbyists for creating 3D models.
  4. Fusion 360: A cloud-based CAD software used for product design, engineering, and fabrication.
  5. CATIA: A 3D CAD software used in the aerospace, automotive, and shipbuilding industries.
  6. Inventor: A 3D CAD software used for mechanical design and product simulation.
  7. Revit: A BIM (Building Information Modeling) software used by architects, engineers, and construction professionals.
  8. Blender: An open-source 3D software used for creating animations, visual effects, and 3D models.
  9. PTC Creo: A 3D CAD software used for product design and engineering.
  10. NX: A 3D CAD software used for product design, engineering, and simulation.

This is just a small selection of the many 3D CAD software programs available. The best software for you will depend on your specific needs and requirements, so be sure to research and compare different programs before making a decision.


Creating 3D models using CAD is a straightforward process that can be accomplished with the right tools and a little bit of practice. By following these steps, you’ll be able to create accurate and detailed 3D models of your designs, making it easier to communicate your ideas and bring them to life.

Other Links:

» How 3D-Scanning Work?

» Understanding Finite Element Analysis (FEA)

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