"rinkak" is a new marketplace for fabrication using digital manufacturing technologies such as 3D printers. Users can manufacture products using high-efficiency manufacturing equipment and market them simply by uploading 3D data to rinkak. Since products are manufactured on demand for each individual order, creators can market products without carrying an inventory. They can also manufacture products from various materials including ceramic, metal and rubber as well as plastic, which is popular. The goal of rinkak is to become a base where creative collaboration between creators and users in many diverse fields is conducted, and new things are born.