In mechanical systems development, it is well known that verification tests covering all aspects of mechanics, software, and hardware cannot be performed until a working prototype of the product is completed. As a result, serious flaws may be not discovered until the final stages of development, resulting in delays and extra work, mainly on the embedded software (known as firmware). We propose a new design and manufacturing methodology for mechanical systems that is based on a 3D real-time simulator, called “VPS” (Virtual Product Simulator). This simulator enables the development of virtual mechanical models on computers, allowing engineers to work on the model without seeing the actual device. It provides more time to thoroughly test the whole system, thereby, making the development process more efficient.