Some key prototyping technologies used in the new product development process for a new microwave stove:

Rapid Sheet Metal Stamping Prototype Parts:
For the outer casing and some internal structural components of the microwave stove, rapid sheet metal stamping can be an effective prototyping technique.
This involves using soft tooling, such as CNC-machined aluminum or low-carbon steel dies, to quickly create prototype parts through a deep drawing or stamping process.
Rapid sheet metal stamping allows for fast iteration and design changes, enabling the product development team to explore different part geometries and aesthetics.
These prototype parts can be used for functional testing, design validation, and gathering user feedback.

CNC Machining of Steel or Plastic Prototype Parts:
For more complex internal components, such as the turntable drive mechanism, cooking chamber, and control systems, CNC machining can be a valuable prototyping method.
CNC machining allows for the creation of highly accurate, functional prototype parts using various materials, including steel, aluminum, and engineering plastics.
This technology enables the production of intricate features, tight tolerances, and complex geometries that may not be easily achievable through other rapid prototyping methods.
CNC-machined prototype parts can be used for functional testing, interface evaluation, and validation of the microwave stove's mechanical and electrical systems.

Additive Manufacturing (3D Printing) of Prototype Parts:
Depending on the specific requirements, additive manufacturing (3D printing) can also be utilized to create prototype parts for the microwave stove.
3D printing technologies, such as fused deposition modeling (FDM) or stereolithography (SLA), can be used to produce prototype parts in a range of materials, including thermoplastics, photopolymers, and even metal powders.
3D-printed prototype parts can be useful for evaluating the aesthetics, ergonomics, and fit of certain components, as well as for testing the integration and functionality of the microwave stove's assemblies.

These prototyping technologies, used in combination with other techniques like computer-aided design (CAD) and simulation, allow the product development team to rapidly iterate, test, and validate the design of the new microwave stove before committing to the final manufacturing process.