This is where we get into the nitty gritty of what the product will look like and how it will be made.
During this phase more analysis, testing and R&D may occur, but the emphasis is on design optimisation rather than determining feasibility. We liaise with manufacturers to ensure that the design is optimised for manufacture and cost. Detailed drawings are prepared suitable for prototyping and manufacture.
At the culmination of this stage a Critical Design Review (CDR) is conducted to ensure that the design will meet all of the Product Specification requirements.
Depending on the cost and complexity of prototyping this may be conducted before or after the CDR. If expensive, prototypes are generally built after the CDR. Thorough testing and evaluation of prototypes is conducted to provide further assurance that the design will meet all requirements prior to committing the design to the expensive tooling and manufacture phase.