The design decision

Prototype pricing is strongly affected by setup and lot size. Production comparisons should include yield, repeatability and the transfer of the approved construction.

What to consider

A prototype built using a special process may not represent the planned volume process. Ask whether materials, via structures, inspection and acceptance will remain the same. Separate engineering samples from qualification units and define how changes are approved before repeat orders.

A practical review example

Request quotes for prototype, pilot and expected production quantities with the same released assumptions. Compare the recurring price separately from tooling and one-time engineering charges.

Checks before release

  1. Confirm process continuity from prototype to volume.
  2. Retain approved materials and substitutions.
  3. Plan qualification before the volume release.

Connect this decision to fabrication

Use the cost estimator to organize the initial discussion. Keep proposed values separate from the approved drawing and document the effect of any change on the rest of the construction.

  • Separate setup, recurring fabrication and optional tests.
  • Compare equivalent quantities, materials and acceptance criteria.
  • Confirm the released construction before relying on price or delivery.
This guide supports early design review. Device requirements, the applicable project specification and the fabricator-approved construction govern the released board.