Define what the prototype needs to show
Consider an aluminum airflow component with curved ribs and several assembly interfaces. Identify which features the physical prototype needs to evaluate, such as a mounting location or the fit of a mating component. Put the required geometry and acceptance criteria in the controlled files.
This is an illustrative design exercise.
Separate prototype and production decisions
If die casting or another process is being considered for later production, state that aim separately. Define what will be purchased for the prototype and which production decisions remain open. A machined prototype does not automatically establish the requirements or suitability of a later process.
What to include in the RFQ
- The prototype’s purpose: assembly, functional evaluation or another review
- The features you need to examine in the physical part
- The model and drawing revision
- Material and finish requirements for the prototype
- Separate prototype and potential production quantities
Before the next prototype or production quote
Before moving to the next stage, record which requirements were assessed and which questions remain unresolved. Agree on any design changes and issue the controlled revision for the next quotation.