Appearance, fit or function?
Write down the decision the prototype should support. Shape and presentation, assembly fit and a functional test can require different outputs. Identify the features that need to be representative and those that do not.
Share the conditions
Tell the studio how the prototype will be handled, which other parts it contacts and whether load, heat or exposure matters. A visual model should not be assumed to be a production-equivalent component.
Plan for the result
Agree how the prototype will be checked and whether the next stage is another iteration, a refined CAD model or a production discussion. Useful feedback relates back to the original purpose of the prototype.
Before you send the files
- Write down the decision the prototype must support.
- Identify the mating parts and critical contact surfaces.
- Describe loads, temperatures or handling conditions that matter.
- Agree how the result will be reviewed before another iteration.


