1
Define the validation goal
Identify whether the build must prove fit, function, appearance, material behavior, assembly, or manufacturing feasibility.
Checkpoint
Acceptance criteria stated before quoting.
Quality System
ISO 9001
Manufacturing Lead Time
Quoted by Scope
500+
Projects Completed
25+
Countries Served
25+
Years Experience
Dongguan
China Factory
Certified Quality & Compliance
Fabex operates a quality management system certified to GB/T 19001-2016 / ISO 9001:2015.
ISO 9001:2015 Certified
GB/T 19001-2016 quality management system
Prototype strategy
Prototype the risks that matter before production investment
A useful prototype validates geometry, material, finish, assembly, or process assumptions with a clear path to the next revision.
| Capability | Fabex scope | Engineering checkpoint |
|---|---|---|
| Lead-time options | Quoted from drawing maturity, material, operations, finish, and inspection | A cut-and-bent sample and a finished welded assembly should not share one lead-time promise. |
| Prototype and bridge quantities | Single-part, low-volume, and bridge paths reviewed per project | The route can change as quantity increases, so approval criteria should stay stable. |
| Tooling approach | No-tooling, standard-tool, soft-tooling, or production-intent tooling selected by validation goal | Avoid production tooling before geometry and market risk justify it. |
| Production-equivalent materials | Matched where validation needs material or finish fidelity | Equivalent material and finish matter for thermal, corrosion, appearance, and assembly tests. |
| Validation evidence | Inspection plan focused on the prototype decision | Measure the features that determine whether the next revision or production release can proceed. |
Not sure whether your part fits this capability?
Send your drawing, material, quantity, and delivery target. Our team will review the process route, manufacturability risks, and open questions before quotation.
Learning loop
Turn each prototype build into a controlled design decision
Fast parts only create value when the team knows what the build must prove and records what changes next.
2
Choose the prototype route
Select production-intent or temporary processes based on the learning goal, quantity, and schedule.
Checkpoint
Known differences from the intended production route disclosed.
3
Build and inspect
Fabricate the released revision and capture the dimensions or observations tied to the validation goal.
Checkpoint
Results recorded against the same revision that was built.
4
Revise and bridge
Incorporate approved changes and decide whether to repeat the prototype, enter bridge production, or release tooling.
Checkpoint
Production risks and open items transferred to the next stage.
What changes your quoted cost
- Drawing completeness
- Material availability
- Number of process setups
- Production-intent finish
- Inspection and expedited scheduling
- Prototype quantity and revision rounds
How we plan your project
Prototype-to-production transition
See the commercial and engineering checkpoints Fabex uses to move this type of job from drawing review into controlled production.
Application
Drawing-defined sheet metal parts and assemblies
Material
Drawing-specified material and thickness
Quantity
Prototype through repeat production
Lead time
Confirmed after DFM and material review
Typical production challenge
An early design needed fit and assembly validation before tooling or repeat-production commitment.
Approach
Define the validation goal, use production-equivalent inputs where needed, record findings, and carry approved changes into bridge production.
What you receive before release
Documented DFM findings, a proposed manufacturing route, quotation, and lead-time plan for your approval.
Prototype questions
Sheet metal prototype FAQs
Answers about lead time, fidelity, quantities, revisions, and production transition.
How quickly can a sheet metal prototype be made?+
Timing depends on drawing readiness, material availability, operations, finish, inspection, and shipping. A simple cut-and-bent part and a finished welded assembly require different schedules.
Will the prototype use the production process?+
It can when process fidelity matters, but temporary tooling or a lower-investment route may be better for early geometry learning. Any meaningful difference from the intended production route should be stated.
Can I order more units after the first prototype?+
Yes. Bridge production can support testing, pilot builds, certification, or launch demand while production tooling and the supply plan are finalized.
How are prototype revisions controlled?+
Each build should use a released revision, with feedback tied to that revision. Changed files are reviewed for price, process, inspection, and timing impact before the next build.
What should be inspected on a prototype?+
Inspect the features tied to the decision: mounting interfaces for fit, critical dimensions for function, finish for appearance, or material and joining behavior for performance.
Can a lower-cost material or finish be used for the first prototype?+
Sometimes, when the build is only checking geometry or assembly. Use production-intent material and finish when stiffness, springback, corrosion, electrical contact, appearance, certification, or environmental testing affects the decision.
Prototype DFM
Use the first build to retire production risk
A prototype should validate fit, forming, assembly and finish decisions that affect production, not simply reproduce every final cosmetic requirement.
View the complete sheet metal DFM guideSeparate learning goals
Mark the interfaces, tolerances and finish characteristics that the prototype must prove.
Use production intent
Test the intended material, bend radii, hardware and assembly sequence when they affect function.
Record the release
Capture approved changes in the model and drawing before repeat production begins.
Customer Perspective
Trust is earned in the next order
B2B customers often give brief, practical feedback and show their trust through the next project.
Selected customers
- Huawei
- vivo
- Sunglow
Full production programs, repeat orders, and multi-year supply — not one-off samples. References available for your sector on request.
Trust shown through repeat work
In contract manufacturing, the clearest reward is often another drawing, another production order, or a larger scope.
Confidential by default
We do not publish a customer's name, product, drawing or project details without written permission. That is not a lack of proof - it is how contract manufacturing works, and it is the same discretion we apply to your designs.
Free Design Review & Quote Drawing and requirement review Free design optimization review No obligation, no hidden fees
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Send your drawings and requirements for an engineering review, project-specific quotation, and manufacturing plan.