Customer drawings and specs in manufacturing records: what must be excluded

Why are customer drawings excluded by default?#

Customer drawings are excluded by default because they usually belong to the customer, arrive under confidentiality terms and describe the customer's product rather than your work. Build-to-print manufacturers hold large volumes of them, scattered across the ERP, a PDM system, shared drives, job packets and email.

Purchase terms, NDAs and quality agreements commonly treat drawings, models and specifications as the customer's property or confidential information, and some require their return or destruction when the relationship ends. Trade secret law may also apply. Even where the terms are silent, licensing another company's design files without permission invites a dispute with a customer you depend on.

Jointly developed parts are the grey zone. When your engineers improved a customer's design, who owns the improvement depends on the development agreement or purchase terms, and counsel should decide that before those records are classified.

The screen list: what to exclude#

The screen list covers the drawing itself and every record that carries a piece of it. Most build-to-print shops find that the drawing files are the easy part; the derived records spread across quality, programming and quoting take longer to find.

Export-controlled technical data sits outside this list because it is excluded entirely rather than screened. Under the ITAR, technical data includes information required for the design, production, manufacture, repair, testing or modification of defense articles, in forms such as blueprints, drawings, photographs and plans, and the EAR defines technology as information necessary for the development, production or use of an item. Releasing either to a foreign person inside the United States can count as an export, so identify and wall off this material before reviewing anything else, with export control counsel involved.

Why derived records are the hard part#

Derived records are the hard part because they can reproduce a customer design without containing the drawing file. A CMM report listing every nominal dimension and tolerance, or a CNC program with its toolpaths, lets a reader rebuild much of the part.

Free text carries the same risk in smaller pieces. A job note that quotes a tolerance, a material callout or a special process requirement from the print leaks a fragment of the customer's specification. Screening has to cover structured fields, attachments and notes, and free text needs a human read after any automated pass.

Photos are easy to overlook. Pictures taken for setups, first articles or nonconformances often show drawings on the bench, part markings or the part's shape, so they are excluded unless each image is reviewed.

What can usually remain?#

Records that describe how your plant runs, rather than what your customer designed, can usually remain after preparation. They are also the records that make a manufacturer's history useful to AI developers building planning, maintenance and quality tools.

• 1Scheduling, sequencing and expedite decisions, with customer names and part numbers replaced.
• 2Machine downtime, maintenance work orders and equipment history.
• 3Internal NCR reasoning about process causes, such as tool wear or fixture problems, without quoted dimensions.
• 4Labor, setup and cycle time actuals against routings coded to internal part families.
• 5Purchasing and supplier delivery history for commodity materials.
• 6Work instructions written for your own equipment, after a check that they do not restate customer specifications.

How do you run the screen in practice?#

The screen runs best in a fixed order: find where customer material lives, decide record family by record family, then check samples of the output. Working the other way round, starting from an extract and hunting for drawings inside it, tends to miss derived records.

• 1Inventory locations: PDM vaults, ERP attachment folders, quality shares, CAM directories, quote folders and engineering mailboxes.
• 2Classify customers as build-to-print, jointly developed or your own design, using the terms counsel has reviewed.
• 3Set a rule for each record family: exclude, transform by replacing part numbers and dropping dimensions, or keep.
• 4Apply the rules in the extraction itself rather than by hand, so they can be repeated and audited.
• 5Have someone who knows the parts read a sample of notes and fields for leaked specification detail.
• 6Record the rules, the samples checked and the reviewer in the rights file.

Do the same rules apply to your own product designs?#

Your own product designs follow a different analysis because you own them, but they are usually held back as well. Licensing your own drawings shares intellectual property and possibly trade secrets, and that decision belongs to the owner and counsel rather than to a records review.

Mixed companies, which make proprietary products and also do build-to-print work, should tag records by ownership early. A product line or ownership flag in the item master often does most of the sorting, and it helps with internal AI tool rules too.

Illustrative: a contract manufacturer sorts its job packets#

Illustrative: a fictional contract manufacturer of sheet metal enclosures does mostly build-to-print work for equipment makers, plus a small line of its own cabinets. Each job packet combines the customer print, the router, inspection sheets and operator notes in one PDF.

The general counsel and quality manager agree a rule: job packets are excluded as files. Router steps, setup and run actuals, scrap reasons and maintenance events are extracted from the ERP instead, with customer part numbers replaced by internal codes. Operator notes are reviewed for quoted tolerances and material callouts, and any note that restates the print is dropped.

The owner decides that the company's own cabinet drawings also stay out. The resulting scope is narrower than the shop's full archive, but every record in it describes the shop's own work.

How SourceX approaches customer drawings#

SourceX excludes customer-owned designs and export-controlled work from manufacturing packages. In the SourceX five-step transaction, the Rights step identifies where drawings and specifications live, and the Preparation step removes them along with derived records and identifying part numbers before the supplier approves anything for release.

The SourceX Evidence Packet documents the exclusions, the privacy record and the release authorization, so the supplier, its counsel and the buyer share one record of what was removed and why.