A prototype remains unfinished if its agreed tests are incomplete
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A prototype may look convincing before it has answered the question it was built to test. When the workshop closes, the handover should preserve that original question and the evidence gathered so far.
Find the agreed brief and its changes. Ask the responsible engineer and customer to distinguish a demonstration model, a fit check, an experimental assembly and any proposed production use. Do not assume that progress towards one purpose establishes suitability for another.
This is a status exercise. Qualified people must determine the actual testing, interpretation and any safety or compliance requirements.
Compare purpose with evidence
A fictional prototype was commissioned to explore whether a component would fit an existing assembly and behave as intended under specified conditions. A fit check has been recorded. The further agreed assessment has not taken place.
| Agreed question | Evidence presently available | Honest status |
|---|---|---|
| Does the recorded version fit the identified assembly? | Dated fit observations for that version | Limited evidence for the stated check |
| Does it meet the other agreed performance requirement? | No completed assessment record | Unanswered |
| Is a later revised version equivalent? | Revision exists; no agreed comparison recorded | Technical review needed |
| Can it enter ordinary production use? | Not established by the stated brief or evidence | Requires a separate qualified decision |
The words “prototype completed” would hide too much in this example. State which work was completed and which conclusions remain unavailable.
Keep unsuccessful findings. They may explain why the design changed or why further work is needed. Do not remove them from the handover to make the project appear closer to completion.
Give the customer a usable next decision
Ask what the customer wants to assess: completing the original work, changing the brief or obtaining advice about the current position. Document any proposed change through the actual agreement and professional advice where needed.
Design-responsibility records help identify who can answer unresolved design questions. The unfinished bespoke-build guide separates physical progress from remaining project scope.
For printed prototypes, the additive-manufacturing handover distinguishes the model file, build preparation and evidence for the supplied part. A digital model should not silently become proof that a particular manufactured version met its brief.
If another provider is considered, disclose the unfinished assessment in the authorised introduction. Give it an opportunity to define its own review rather than assume it will accept earlier conclusions.
When discussing the workshop’s own assets with UK Auction Group, identify equipment still required by a confirmed project dependency. Keep customer prototypes outside general sale assumptions. The owner should leave a record that a future reader can use without mistaking an attractive object or a successful demonstration for a completed validation programme.
Explore workshop and engineering exit.
Sources
This guide is general information and education only. Legal, tax, employment and safety decisions may need a qualified adviser who knows your situation. Read the disclaimer.