Compare the operating models
In this fictional example, Standard desk D uses four legs and one top. Job J4 needs a customer-selected top and a cable hole. Replacing the standard definition with J4’s details would affect later ordinary desks.
| Business requirement | Reusable standard BOM | Job-specific specification |
|---|---|---|
| Repeated ordinary desk | D: four legs and standard top | Repeats unchanged design work |
| J4 selected top | Changing D affects other orders | J4 retains its supplied top |
| Cable hole work | Not assumed for every D | Operation attached to J4 |
Work through the chosen model
Link J4 to the standard base, then record its material substitutions, dimensions and work operations. The build sheet identifies the job and chosen specification. Staff use that sheet for J4 while ordinary orders keep D’s unchanged definition.
- Customer chooses standard or custom scope
- Prepare the matching build sheet
- Issue materials and perform specified work
Job specifications support custom work but require preparation and production visibility. Standards reduce repetition; copying a standard does not itself record what the customer asked to change.
J4 uses four standard legs, its selected top and one cable-hole operation. D still specifies four legs plus one standard top, with no cable hole. There are two build definitions, not two conflicting copies of D.
When the other model fits
The cable-hole design becomes the new standard for all future desks. Must it remain only a J4 note?
Show the worked answer
No. Establish a new supplied standard definition for future work while preserving J4’s actual specification.