Let’s imagine you came up with an idea for a great new product that will shake up the market. Most people do not have CAD design experience, and if you are one of them you should consider looking for somebody who will be able to understand your needs and provide reasonable advice.
You could go on the Internet and search for something like “create 3d model” and spend a few hours doing research. I am sure you can easily find a CAD engineering company that will be happy to help you create a 3D model, rendering or drawing that you can take further for rapid prototyping to see if the concept for your invention is what you had imagined and whether people from your target audience are going to like it or not. In most cases invention design companies have only one requirement: a simple sketch that represents your idea. All necessary steps like calculations, functionality check and usability are not things you should worry about as an experienced team of engineers will do this job for you. However, you should keep in mind that a clear explanation and thorough communication with the contracting company is very important. If you are worried about protection of your intellectual property rights you can ask the CAD service provider to sign a non-disclosure agreement. You should give your clear instructions and set a deadline for the company that provides CAD services. If your project is relatively big, you can divide it into smaller parts and check the implementation of each of them after certain period of time. This will help you keep tabs on the process and control your spending so that the result will meet your expectations.