6 prototyping stages are common in the product development process:

1. Determination of Needs: The initial stage is to determine the need and purpose of the product to be created.
   This includes identifying the problem to be solved, market analysis, and business objectives.
2. Planning: At this stage, the development team does detailed planning on how the product will be created.
   This includes determining the features and functions of the product, creating wireframes or rough sketches of the product, and determining the technology to be used.
3. Design: The design stage involves creating the visual design of the product and developing the user interface.
   It includes the use of mockups and visual prototypes that can help develop a better product design.
4. Prototyping: This stage is the creation of a physical or digital prototype of the product.
   This can be done using 3D printing technology, prototyping software, or other hardware that enables rapid prototyping.
5. Testing: Once the prototype is created, the product should be tested to ensure that it works as per the needs and specifications.
   Testing can be done in various ways, including user trials, performance testing, and functional testing.

6. Evaluation and Improvement: Once testing is complete, the development team evaluates the test results and determines which areas need to be fixed or improved.
   Then, the team will make changes and improve the prototype before launching the final product.