Custom Design Source is a Engineering Design and Consulting firm located in South Beloit, Illinois. Our mission is to exceed our clients expectations and deliver the best possible services, within their budget. We are a skilled and talented team of mechanical engineers and designers with direct knowledge in the design and manufacture of products in various fields such as Aerospace, Consumer Goods, Green Energy, and Machine Tool.

We start with your ideas. They can be in the form of hand sketches on a napkin, a 2d drawing, or a rough 3d model. We then develop your ideas into a detailed, finalized design that is ready to be manufactured. We then work with our network of partners to provide you with a prototype of your design.

 At Custom Design Source, we understand each and every one of our clients' unique needs and go above and beyond to develop the most cost-effective solutions, while providing you with the best final product. We provide our clients with a multitude of services to eliminate the need of more than 'vendor'. Rely on us as your 'One Stop Solution'.