What is a CAD drawing?
A computer-aided design (CAD) drawing is a digital representation of an object, structure, or system created using specialized software to create precise and detailed visual plans. CAD drawings, utilized across various industries, such as architecture, engineering, and manufacturing, enhance accuracy and efficiency in the design process by streamlining development and production workflows.
How to choose CAD software
The mechanical 3D CAD buyer's guide helps you score and select the software that's the best fit for your organization. Using a 7-step process, you'll go through a worksheet of must-have fundamentals like sketching and parts and assembly modeling along with weighing more recent innovations like augmented reality and model-based definition.
PTC’s CAD Products
Creo—Deliver your best designs in less time
Creo is the enterprise-grade CAD solution for complex product development, integrating the entire workflow into one robust and reliable system. Creo offers integrated Ansys simulation, model-based definition, AI-powered generative design, and advanced CAM, including composites and additive manufacturing. Its tight integration with Windchill and open architecture enable seamless data flow across engineering and manufacturing. Unlike other CAD systems, Creo offers infinite scalability, tailored workflows, and unmatched large assembly performance.
Onshape—Modernize your product design process
Onshape is the cloud-native CAD platform built for agile hardware teams of all sizes. It requires zero IT support, never crashes, and never loses data. By combining CAD and PDM in a single, always-current environment, it enables real-time collaboration across global teams. Unlike other CAD systems, Onshape runs in a web browser with no downloads, installs, or manual updates—just instant access and productivity.
How is CAD software used?
Computer-aided design (CAD) software is widely used across various industries to create precise drawings and technical illustrations, empowering engineers and designers to transform concepts into 2D and 3D models. See how top companies harness CAD software to enable the creation of complex designs with innovation and efficiency.
Explore Creo's advanced toolset to see how we enable users to expand deeper functionality. From generative design and additive manufacturing to simulation and analysis, learn more about Creo's capabilities in 3D part and assembly design, analysis, manufacturing, and more.
2D drawings
2D drawings serve as blueprints or guides for more complex structures and concepts that help designers and engineers to communicate their ideas effectively and lay the groundwork for further development.
3D design
3D design creates lifelike representations of objects, environments, and characters with advanced software tools.
Additive Manufacturing (AM)
Additive manufacturing can help develop innovative designs, optimize, and print to a variety of printers—all in service of improving quality while reducing costs.
Assembly drawings
Assembly drawings are technical illustrations, including dimensions, materials, and specifications, that guide workers in assembling product or system parts.
Assembly modeling
Assembly modeling involves assembling individual components into a complete, functional system to see how components fit and operate ahead of physical production.
CAM software
Computer-aided manufacturing (CAM) software automates and optimizes production for precise control over machine tools, reduced human error, and enhanced efficiency.
Composite part design and manufacturing
Composite part design and manufacturing in engineering involves combining two or more materials to produce properties that are superior to individual components.
Computer-Aided Engineering (CAE)
Computer-aided engineering (CAE) helps engineers to optimize their products for performance, reliability, and safety with computer software and tools.
Concept design
Concept design transforms ideas into visual representations, ensuring that the final design aligns with the project’s objectives and user needs.
Generative design
Generative design helps designers leverage software by inputting specific parameters to produce innovative and efficient solutions.
Geometric dimensioning and tolerancing
Geometric dimensioning and tolerancing provides a comprehensive system to define and communicate engineering tolerances with symbols.
Model-Based Definition (MBD)
Model-based definition is a method of understanding and describing complex systems using mathematical and computational models.
Model-Based Enterprise (MBE)
A model-based enterprise utilizes detailed 3D models and simulations as a central point, enabling efficient workflow and rapid iterations based on real-time data.
MultiCAD
MultiCAD refers to the use of multiple computer-aided design (CAD) software programs and tools in a single project or workflow for greater flexibility and efficiency in design processes.
Simulation and analysis
Validate virtual 3D prototype performance to understand how designs perform in real-world conditions and test the stresses and loads of your design.


