Are you wondering how outstanding mechanical engineers are capable of coming up with and design the marvelous new products that are being built each day? Much of the amazing technological and mechanical advances we see on a daily basis are created as a result of something called CAD or computer-aided design. CAD programs are a few of the most excellent computer programming available and these advanced programs let engineers design objects in both two and three dimensions.

If graphic design is a hobby for you, why not turn it into a business? You don't have to quit your job. These days, everybody needs a little extra income and perhaps the best way to get it is by doing something you're passionate about. You don't need to be an architect or an engineer. Anybody who is into graphic design will have a knack for measurements and can easily find their way around various technologies such as CAD systems which are just about the most popular tools for designers these days. If you think you have the talent, start a career as a freelance designer. You'll be surprised at what awaits you.

Make a research about this software and how you think you can make it work for your designs if you haven't used a CAD system ever since. There are different types available for download on the Internet, but the most common ones would be 2D CAD, 2.5 CAD and 3D CAD.

2D CAD is a simple tool that allows you to create lines, curves and shapes that are based only on the X and Y axis. This means any design can be executed but without visual depth. Making a certain depth that you will compare to a prism effect therefore 2.5D CAD graphics are like the first one except that images can be represented with a third axis, the Z axis.If you want to create images that are closest to reality, the 3D CAD program is what you need. With this program, you can make graphics with a realistic depth that makes use of the X, Y and Z axis and allows a 360-degree graphic rotation capability.

Software is the last thing you will be worrying about if you’re a really talented designer. Getting clients in the beginning could be an issue but as long as you know your way around the web, this should be easily handled. In fact, you can just run a search on the keyword "CAD freelance sites" and you'll be shown various online resources where other CAD freelancers market their services. You will find that it will be not as difficult as it seems. The trend for companies has been purchasing products from an outside supplier with essential functions in their operations department and these functions comprise computer-aided designing. Everyday, thousands of service buyers log on to these sites in search of professionals whom they can tap for their outsourcing requirements. As long as you stay active in these sites and alert for any open positions you may bid on, you should be fast on your way to building your own freelance design empire.

The industries that are using CAD like shipbuilding, automotive, aerospace, architectural, and many other industries are heavily able to assist in the design of the most basic to the most complicated product. Computer-aided design has changed the way that we create even the simplest lotion bottle and greatly advanced what we ever thought was possible.