Metal spray build-up and remachine is a process that involves spraying molten metal onto a surface to build up its thickness and then machining it to the desired shape and size. This process is commonly used to repair damaged or worn components, such as industrial machinery parts, where it is often more cost-effective than replacing the entire component. The sprayed metal can be made of various alloys, and the process can be performed on a range of materials, including metals, ceramics, and plastics.