Hardware planning
Prototype-to-production handoff checklist
Prepare production by releasing a consistent build package, defining how units will be accepted, and proving the proposed process in a pilot. Record unresolved issues and approval owners before authorizing the next build.
Sources reviewed October 4, 2026. Checklists and examples are Hard Tech Directory editorial guidance.
Build your project brief →1. Release a consistent build package
A successful prototype demonstrates one build. Use the handoff to make the next build reproducible: identify the exact files, materials, assembly instructions, and test steps the supplier should follow. The checklist below is editorial planning guidance, not a certification or formal readiness assessment.
- Align CAD, drawings, bill of materials, firmware, and assembly instructions to a named release.
- Identify permitted substitutions and who can approve alternatives.
- Document critical features, finishes, labels, packaging, and handling requirements.
- Assign responsibility for tooling, fixtures, test equipment, and supplier-created files.
2. Define acceptance before the pilot
Ask the supplier how the proposed production process will demonstrate your requirements. Separate dimensional evidence from functional checks and external testing. A report on one sample does not establish that every unit meets every requirement.
- Agree which features and functions are checked, on how many units, and by which methods.
- Define report contents, material records, and lot or serial identification where needed.
- Specify how failed units are segregated and how rework is approved.
- Name the person who reviews evidence and releases the next build.
3. Make changes and shortages visible
Treat an engineering change as a new decision about affected stock, tooling, files, and tests. Give the supplier a named contact for exceptions. Do not let a component shortage silently become a substituted build.
- Record the approved revision on the order and the evidence returned with it.
- Agree how changes affect work in progress, old inventory, cost, and schedule.
- Set a route for reporting shortages, process deviations, and failed tests.
- Request a ramp plan with quantities and dependencies rather than a single optimistic delivery date.
4. Review the pilot before repeat production
Use the agreed pilot evidence to close the handoff. For an illustrative electronics assembly, record the board revision, programming version, test procedure, unit results, and disposition of failures. If the fixture or test procedure changes during the pilot, record that change and decide which units need checking again.
- List accepted units, failed units, corrective actions, and remaining questions.
- Confirm whether the proposed repeat build uses the same process and suppliers.
- Approve, revise, or pause the next build with an owner and a written reason.
Decision checklist
- Released files and approved substitutions identified
- Tooling, fixtures, and test responsibilities assigned
- Pilot acceptance and reporting agreed
- Change and nonconformance handling documented
- Pilot evidence reviewed before the next build
Sources and next steps
Sources support the context described above. Provider documentation describes that provider's service; confirm the scope in your own quote.
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