CAD has revolutionized the world, or rather, the way we design the world. Yet, many people still don't know what the acronym CAD stands for. CAD stands for "Computer-Aided Design". It is a powerful technology that helps engineers, designers, and architects create amazing things.
In this blog post, we would like to explain what CAD software does, which industries use it, how the technology works, and what design possibilities it offers. Because CAD is no longer just a special tool or program for engineers and architects. DIY enthusiasts, tinkerers, and crafters can also do many great and creative things with the right software.
What is CAD?
CAD is software that allows users to create designs, models, and drawings in a computer-aided way, including simulations. The acronym stands for "Computer-Aided Design" – in German, "computer-supported design." CAD software is designed to support the design process for a model or construction and to make it easier for engineers, designers, architects, and other professionals to create precise and detailed 2D and 3D models and prepare the final version of the model for printing.
How did the design process work without CAD software?
Before the introduction of CAD, the design process was manual and thus much more complex. Modeling was done by hand.
- Sketches and technical drawings were made by hand on paper.
- Engineers, designers, and architects used drawing tools such as pencils, rulers, protractors, compasses, and stencils to create precise sketches and technical plans.
- Most designs were created in 2D. Representing a complex work spatially in 3D was always an enormous challenge.
- Engineers relied on a variety of manuals, tables, and diagrams in their work. These contained all important information and data on materials (strength, density, thermal properties, etc.) and their tolerances. This information was very complex and had to be taken into account in the designs.
- If changes were made to the designs, designers had to revise the drawings manually.
- If several departments collaborated on an object, drawings and construction plans often had to be handed over in person or sent by mail.
CAD software has digitized this process, thereby simplifying and accelerating it significantly. All tools for creating constructions have been digitized.
What are the advantages of CAD software?
CAD has digitized and thus revolutionized the design and construction process in many industries. CAD has a long list of advantages compared to the paper-based design process just described.
The five most important are:
Efficiency: CAD software makes it possible to create designs much faster than by hand. The software also offers tools that automate certain tasks and calculations. The result: designing drafts is faster and more efficient than drafting by hand. Great side effect: By enabling more efficient and precise construction, CAD helps to reduce production times, lower costs, utilize resources more effectively, and minimize unnecessary material waste.
Flexibility: If changes are desired, simply adjust a few parameters and modify details in the software. Plans drawn on paper usually had to be redrawn from scratch. Great side effect: Since plans are so easy to change, CAD makes it very simple to flexibly respond to customer wishes and, if necessary, even adapt products to the needs of individual customers in a systematic way.
Precision: Software does not make mistakes, even with the most complicated calculations. The results are always extremely accurate, precise, and realistic models – even in 3D.
Creativity: With the help of CAD, you can simply try things out and experiment – and thus potentially come up with ideas and solutions for which you would never have invested the time or had the opportunities using traditional methods. Unlike in the past, where plans were physically handed over, interdisciplinary teams can work together on constructions from the very beginning – and are in active exchange throughout all phases of the project.
Intelligence: All the information about materials and their tolerances that designers previously had to look up in different manuals are an integral part of the material databases in CAD software.
How long has this software been around?
The first rudimentary forms of computer-aided design already appeared in the 1950s and 1960s. The development of CAD is therefore already very old, but it has developed and refined significantly year after year. Here are the most important stages in the history of CAD software:
- Research into mathematical models for solving engineering problems began as early as the 1950s. The systems developed here are considered precursors to CAD.
- Specifically for technical drawings and constructions, CAD systems were developed and used in the 1960s. These systems were still very expensive and highly complex.
- In the 1970s, the technology evolved from rudimentary 2D drawing programs to drawing programs also for more complex 3D systems.
- In the 1980s and 1990s, CAD became increasingly powerful and affordable. The interaction with other technologies such as CAE (Computer Aided Engineering) and CAM (Computer Aided Manufacturing) was improved, making it possible for the first time to fully digitize the product development process. STL established itself as an interface. The designations DWG, DXF, and OBJ also became CAD file formats. CAD solutions were used early on, especially in industry.
- Since the 2000s, CAD systems have continuously evolved, and parts of them have opened up to a wider user group. User-friendly, intuitive interfaces, the integration of cloud databases, and mobile applications are making CAD software not only more powerful and better, but also easier to use.
- Today, even old CAD programs include numerous functions and are available as tools for both Mac computers and MAC devices (MacOS CAD) as well as for Windows PCs – usually at a good price, or free / as a free trial version. Well-known providers of CAD software or products include: Creo CAD, Solid CAD, Open SCAD, AutoCAD, SolidWorks, Catia CAD, Autodesk AutoCAD, Rhino / Rhinoceros 3D, Source CAD, FreeCAD, and BeckerCAD.
Who works with CAD software?
After its triumph in industry, more and more sectors have recognized the benefits of CAD for their own needs and areas. Professionals in a wide range of industries work with CAD and use the tool for their complex planning. Early adopters and users include:
- Mechanical Engineering & Mechanical Engineers: for technical drawings, for 3D models of machines, devices, vehicles and other mechanical components
- Architects and Civil Engineers: for creating and analyzing 2D and 3D models of buildings, bridges, roads and other construction projects in architecture
- Interior Designers: for creating and visualizing concepts for spaces, furniture and interior design, as well as professional space planning
- Product Designers: for designing and visualizing product prototypes – before they go into production and manufacturing
- Automotive Industry: for creating and optimizing vehicle designs
- Aerospace Industry: for designing and analyzing complex aircraft, spacecraft and professionally designing components
- Medical Technology: for designing and testing implants and medical devices
- Electrical Engineers: for designing electrical schematics and circuit board layouts, as well as plans for simple and sometimes complex technology.
Beyond that, many industries have learned to use and appreciate the advantages of CAD for many areas. Private individuals are also increasingly having CAD software on their own computers.
What can private individuals do with CAD software?
CAD offers numerous design and construction possibilities and is no longer limited to professional engineers or designers. There are many things that private individuals can implement with the help of CAD.
Here are a few suggestions and examples:
For creative DIY projects: Of course, the application possibilities for hobbyists, tinkerers, and DIY enthusiasts are endless. They can design 3D models of objects such as furniture, decorations, art objects, toys, etc., and either produce them for free on their own 3D printer or send them to a workshop.
For home and apartment renovation: With the help of CAD, homeowners can virtually create their rooms and plan the interior design. Using CAD, they can create floor plans, try out and place different furniture, change colors, and generally experiment with and fully visualize design variations for all rooms as they wish.
For garden planning: What we just described for interiors also works outdoors. With the help of CAD, garden owners can design and change terraces and try out different design ideas for all areas in the garden.
For creating spare parts: Something broke, or you lost something? With the help of CAD, all items can be effortlessly redesigned. You design a model in any shape. Then simply send the whole thing to your 3D printer and the spare part is created.
Further suggestions and examples
For model building: With CAD, private individuals can design precise models of airplanes, cars, boats, buildings, and other objects. They then use these models as a basis for physical models. CAD also offers this possibility.
For art and individual decorations: Crafters and people interested in art can use CAD to digitally illustrate completely new art ideas and create 3D sculptures – including printing. There are no limits to creativity. Whether you then create the digitally created art object in 3D, or only as a 2-dimensional poster, is up to you.
For inventions: You are a private person and have an idea for solving a specific problem? With the help of CAD software, you can digitally tinker with prototypes for your solution, optimize and refine the prototype, and finally print (or have built) and test your construction/model. And who knows, maybe you'll have a profitable business idea that could earn you a lot of money.
These were just a few ideas. There are certainly many other application examples and functions for private individuals. However, the examples listed illustrate that CAD is no longer just for professionals, but that the software also offers practical added value to private individuals. And the nice thing is: whether it remains "creative tinkering" with software on the PC, or whether you create, exhibit, and possibly even sell your designs, remains your decision for all your creations.
Do any of these examples appeal to you?
Would you like to use CAD software yourself – either professionally or privately – and try out one of the examples above? Or do you already have your own ideas and projects that you want to tackle with CAD?
Then we recommend BeckerCAD 12 3D PRO. We currently have an introductory offer where you can get this full-featured CAD software as a 3D version for Windows for only 29.99 Euros (instead of the original price of 139.99 Euros). A very good price, considering all the possibilities you have with this CAD program – from simple models and drawings to complex constructions. We wish everyone who seizes this opportunity a lot of fun trying it out.
