01
Geometry intent
Separate exact interfaces and CTQs from simplified walls, fasteners, radii, internal features or design allowances.
Evidence route
Geometry-delta list and affected test boundaries
Prototype claim boundaries
Production-intent limitations: separate what looks final from what is made like final.
A prototype may match geometry, colour or function while differing in raw material, manufacturing physics, tooling, surface history, inspection and variation. PartVerity records those deltas so prototype approval does not silently become production approval.
Decision premise
Claim question: which production characteristics are represented, approximated or not evaluated by this build?
Engineering control
Six dimensions of production intent
‘Production-like’ is too broad. Each relevant dimension needs its own fidelity statement and follow-up evidence.
02
Material intent
Compare exact grade, processing history, orientation, moisture, reinforcement, heat treatment and surface condition.
Evidence route
Material comparison and unsupported-property list
03
Process intent
Identify differences in forming, moulding, cutting, joining, support, porosity, residual stress, tool marks and post-processing.
Evidence route
Prototype/production route map and risk assessment
04
Appearance intent
Distinguish representative colour/texture from final coating stack, mould texture, grain, ageing and batch variation.
Evidence route
Controlled visual sample purpose and limitations
05
Variation intent
State whether the build evaluates one nominal sample, build repeatability, supplier repeatability or expected production variation.
Evidence route
Sample size rationale and variation claim
06
Transfer gate
List the production-intent characteristics that need pilot, tool-trial or production-route validation before release.
Evidence route
Open validation register and named gate authority
Decision matrix
Prototype resemblance versus production evidence
High visual fidelity can coexist with low process fidelity, and the reverse can also be useful.
| Prototype statement | Evidence-safe interpretation | Required next proof |
|---|---|---|
| Same nominal polymer family | May support selected fit or handling tests | Exact production grade and process validation |
| Machined to final geometry | Can support interfaces and some functional tests | Production process effects and capability |
| Painted to target colour | Supports controlled appearance discussion | Final substrate/pretreatment/coating batch evidence |
| Assembly works once | Supports configuration learning | Repeat builds and production-intent variation |
| Passes laboratory test | Supports stated configuration and method | Production configuration, sample basis and release gate |
Claim boundaries
Words that need a stated dimension
‘Production-like’ without naming geometry, material, process or appearance.
‘Same strength’ based only on supplier literature.
‘Final colour’ without final substrate and finish system.
‘Validated’ without sample, method, result and configuration identity.
Technical context
Use guidance to frame the review—not to replace project evidence.
External context for distinct prototype purposes and fidelity stages. The released project definition governs every production-intent claim.
Formlabs prototype-stage guide