Tech Packs That Go Wrong at the Factory

An instruction problem can look like a factory problem

A sample arrives looking different from the buyer’s intention. The immediate response is to ask the factory to make it again. Before doing that, establish which tech-pack revision it used, what changed and whether the measurement method was clear. Otherwise another round can reproduce the same misunderstanding.

Forge supports a style record containing the specification, materials, BOM and sample context. Its tech pack includes construction, measurement instructions and the graded size specification, with approved revisions frozen for the supplier PDF. The useful control is an identifiable instruction set, not simply a newer attachment name.

Make the point of measure unambiguous

A half-chest measurement taken flat is not the same number as full chest circumference. Position, garment state and measuring method matter as well as centimetres. A tolerance only has meaning when both teams assess the same point in the same way.

For the worked overshirt, all measurements refer to the base-size garment using the specified methods. The tolerances are illustrative product requirements, not industry standards. Forge keeps those requirements beside the style; the technical owner still needs to define and approve them appropriately.

Compare the sample with the released requirement

Revision 1 specified half chest of 55 cm with a 0.5 cm tolerance. Revision 2 changes the target to 56 cm and retains that tolerance. The sample measures 55.2 cm: within the old range, but 0.8 cm below the current target and 0.3 cm beyond its allowed tolerance.

The other checks use a 72 cm body target with 0.7 cm tolerance and a measured 72.4 cm, plus a 63 cm sleeve target with 0.5 cm tolerance and a measured 62.7 cm. Those two pass under the stated rules. Passing two measurements does not resolve the chest discrepancy.

Separate a physical measurement from a revision decision

The same sample does not change when the comparison moves from Revision 1 to Revision 2. Its apparent status changes because the requirement changed. Retain the measured facts and the instruction reference rather than overwriting the old target to make the assessment appear consistent.

Forge’s controlled revisions help identify that basis. Confirm which revision was released, which the supplier received and which the assessor used. A frozen revision is not proof that every person has the right document; the communication and acknowledgement still need a check.

Keep the assessment’s precision consistent with the agreed method. A rounded display can be useful for presentation while the original measured value remains necessary for a tolerance decision. Do not round a borderline measurement into acceptance or compare a flat garment measurement with a specification taken under a different condition.

Close the discrepancy before asking for another sample

A useful correction identifies the affected point, method, target, tolerance and observed result. Decide whether the next step is a corrected sample, clarification of the instruction or an authorised design change. Do not send a vague request to improve fit without stating what must be different.

Keep the BOM and construction context aligned if the correction affects other parts of the garment. The example does not change fabric or cost; it isolates the instruction and measurement problem. A new PDF should represent the accepted technical decision rather than become another uncontrolled alternative.

Give the supplier one current instruction set

Before the next factory round, reconcile the specification, tech pack and sample request to the intended style and revision. Preserve earlier evidence for history while making the active instruction unambiguous. Several documents can be useful references without all being valid production directions.

Forge provides the connected product record and export context. The responsible team must still confirm the release and applicable approval. The article animation does not approve the sample, revise a purchase order or authorise production because an old measurement happens to fit an old tolerance.

A release check can be short and specific: style identity, revision, base size, measurement methods, material references and the decision being requested. Confirm the supplier’s response against that same set. The check is valuable because it prevents ambiguity, not because another document has been added to the folder.

Use the next round to test a defined correction

For this overshirt, the unresolved question is the 55.2 cm half chest against the released 56 cm target. Body and sleeve results remain recorded, but the sample is not represented as fully approved. The next request should identify exactly which instruction and physical result need to agree.

Merchmix Forge makes the relevant technical context available for that decision. A good tech pack reduces ambiguity between design intention and factory execution; it does not replace the assessment. The objective is one current, understood instruction set and an accountable decision on the garment made from it.

Common questions