When prototype documentation risks costing more than the prototype itself
maggio 20, 2026
Prototype documentation is becoming an increasingly interesting topic, mainly because in many cases the workload is no longer related only to manufacturing the component itself. A fairly common scenario is appearing more and more frequently.
The customer requests a prototype, maybe a small batch of five or ten parts. Sometimes even fewer. From a manufacturing perspective, the work itself is perfectly manageable. Material selection is defined, machining operations are planned, possible treatments are evaluated and the required dimensional inspections are established. Everything fits into a relatively predictable technical workflow.
Then the second phase arrives: PPAP, ballooned drawings, dimensional reports, traceability, material certificates, control plans and customer-specific documentation requirements.
And this is exactly where an interesting reflection begins.
When the requirement is not the problem
The point is not to question the customer's request. Anyone purchasing or validating a component has completely understandable requirements. They want documented evidence, traceability, process control and confidence that the component meets all expected specifications.
From this perspective, the requirement itself is correct. The real question is different: How is all this documentation actually created today? Because in many companies, even now, the answer is surprisingly similar.
Documentation is still heavily manual
In many operating environments, documentation workflows still contain a strong manual component. The drawing PDF is opened on a screen, characteristics are ballooned one by one, dimensions are manually transcribed, Excel sheets are completed and documents are adapted to customer-specific formats.
Then come cross-checks, revisions, corrections, updates and version management. When viewed from the outside, in some situations the process looks more like a transcription activity than a modern industrial process. And this is where the real paradox appears.
When documentation weighs more than the component itself
For small batches and prototypes, the documentation workload can become surprisingly high. Not necessarily because the required inspections are excessive. Very often the issue comes from the fact that information management workflows are still insufficiently automated.
The result is that the time dedicated to documentation can start approaching, or in some cases even exceed, the time required to physically manufacture the component itself.
And this is a situation worth reflecting on. Because the right question should not be: “How can we reduce inspections?” The question should be different: How can we reduce the time spent on repetitive activities without reducing the technical value of the work?
The value of a quality engineer is not filling in spreadsheets
This is probably the part I consider most important. The value of a quality engineer does not come from copying dimensions from a PDF into an Excel spreadsheet.
The real value lies in the ability to interpret data and understand what it is actually saying. It lies in analyzing critical issues, evaluating process robustness, identifying potential problems before they reach the real component and supporting continuous improvement activities.
Repetitive tasks consume time that could be dedicated to activities with much higher added value. And this is where the discussion becomes truly interesting.
Towards smarter documentation
The direction many companies are starting to explore involves progressively automating repetitive activities.
For example:
automatic feature recognition from drawings
assisted ballooning
automatic generation of characteristic tables
standardized documentation workflows
dynamic templates adaptable to different customers
The objective is not to reduce quality standards. It is exactly the opposite. The goal is to make the process faster, more sustainable and more consistent.
Because if the market increasingly requires documentation even for small batches and prototypes, then the way that documentation is managed also needs to evolve.
Modern components and outdated documentation processes
Today we manufacture components that are increasingly complex, precise and technologically advanced. Yet in many situations we still manage documentation using processes designed years ago. And this is where another interesting question emerges. Are we really optimizing the entire process? Or are we simply accepting that certain activities disappear into the large bucket of indirect costs without ever truly analyzing them? Because the risk is becoming clear: building modern components... with medieval documentation processes.
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