The fabrication of a metal prototype typically involves the use of three different types of metal prototypes: die cast, machined, and forged. Die casting is the process of creating a metal object by pouring molten metal into a mold, where it cools and solidifies. Machined metal prototypes are created by cutting or shaping an existing piece of metal using various machines. Forged prototype is made by heating a piece of metal until it becomes malleable and then shaping it using a hammer and anvil.

The process of metal prototype fabs can be broken down into four types: machining centers, foundries, metal service centers, and fabricating plants. Machining centers are used for making prototype parts from a metal sheet or bar. Foundries usually make more complex objects such as engines or machines. Metal service centers do a variety of things such as welding, cutting, and brazing. Fabricating plants are used to turn raw metal into finished products.

There are three types of metal prototype fabs: general-purpose (Gpp), specialty, and high-volume. A Gpp fab is typically used for larger orders that require a higher level of quality and may take longer to produce than a specialty or high-volume fab. Specialty fabs are used for smaller orders that need low levels of quality or speed, while high-volume fabs can produce large quantities of products quickly.

process of Metal prototype: A Metal prototype is a model created from a 3D CAD design of an object or component. prototypes are used to test the feasibility and function of a product or design. The process of making metal prototypes is different for each type of metal.

Steel prototype fabrication typically uses investment casting, which is a manufacturing process where molten steel is poured into molds and then solidified. This typically produces two types of prototypes: end-use or engineering-grade prototypes, which are used for testing or evaluation; and production-grade prototypes, which are used for manufacturing.

Aluminum prototype fabrication typically uses die casting, which is a manufacturing process where molten aluminum is poured into molds and then solidified. Die castings produce three types of prototypes: engineering-grade prototypes, which are used for testing or evaluation; production-grade prototypes, which are used for manufacturing; and lightweighting prototypes, which are used to test the weight/strength ratio of an object.