Prototyping & validation

Prototyping & First Article Inspection

Before you commit to a hard tool, we can quote a prototype or soft-tool route: wire-cut or laser-cut blanks, a temporary or partially hardened die, and small-batch forming, so geometry, material behaviour and fit are proven on a real part. The same tool room that builds the production die builds the prototype — which is why the knowledge transfers instead of being lost.

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15–30 daysTypical tooling lead time

Soft toolPrototype route

Full reportFirst article inspection

PPAP-readyDocumentation path

Short answer. A prototype route exists so that a drawing can be tested before a production die is cut: DFM review first, then a soft or temporary tool, then first article inspection, then a controlled transition to serial production with PPAP documentation.

Step 1 — DFM review before anything is cut

Send the drawing and the model with the material specification, the annual volume and the dimensions that actually matter. We review the draw ratio or strip layout, the number of forming operations, the material's behaviour in that geometry, and where the forming risk sits. The output is a specific route with a stage sequence, a tooling concept and a tonnage estimate — not a generic statement that the part is feasible.

The most expensive moment in a tooling programme is discovering a geometry problem during tryout. Review is designed to move that discovery earlier, where it is cheap.

Step 2 — Prototype routes

Depending on what has to be proven, the prototype can take one of three forms:

Soft tool. A temporary die in unhardened or partially hardened tool steel that forms real parts in the production material. Best when the point is to validate the forming route itself.
Wire-cut or laser-cut blank plus forming. The blank is cut on our wire EDM or laser equipment and formed with a temporary tool. Faster and cheaper when the flat pattern and the form are already reasonably well understood.
Machined prototype. For fit checks, fixtures and early assembly trials where the part only needs to exist in the right dimensions — not to be produced by the final process.

Which route makes sense is a technical decision, not a commercial upsell: a machined prototype proves fit but says nothing about formability, and a soft tool costs more but answers the question that actually matters at this stage.

Step 3 — First Article Inspection

The first parts off the tool are measured against the drawing in full: every dimension reported, with the drawing ballooned so the report can be read alongside it. Material certificates come back from the mill or supplier, hardness is verified on the Rockwell tester after heat treatment, and where the control plan marks significant characteristics, a capability study is run rather than a single measurement.

Gauging is in-house, so the same instruments that produce the FAI report also run incoming inspection on outsourced heat treatment and plating — the full list is on the equipment list.

Step 4 — From prototype to PPAP

Prototype acceptance is not the end of the process. The transition to serial production is a controlled one: tryout results and open items are closed out, the process is documented with a process flow, PFMEA and control plan, measurement systems are verified, and the PPAP submission is assembled at the level the customer requires. Where the part is automotive or enters an automotive assembly, IMDS material data is submitted through the Balford IMDS process.

See PPAP capability for the documentation set we support.

Send the drawing and the volume

Tell us what has to be proven — formability, fit, material behaviour or appearance — and we will tell you which prototype route answers that question at the lowest cost.

Send your drawing for a DFM review