Follow the task
Identify the exact product
Record the model, configuration and the drawing revision supplied for it. Keep a generic shop photograph separate from the dimensional document. Similar-looking bowls may belong to different models or mounting arrangements.
Name the different dimensions
Separate overall outside size, bowl dimensions, supplier requirements for the cabinet and the specified cut-out/template. Copy the terminology used in the actual document. Never derive a cutting line by subtracting an invented margin from an overall dimension.
List interacting components
Ask about the worktop, taps, accessories, plumbing and anything else the actual supplier or fabricator needs to confirm. Record which party resolves each issue. A model’s advertised width does not establish compatibility with the whole cabinet or worktop assembly.
Approve the document trail
Have the responsible professional confirm the exact template, product and agreed scope before fabrication. Preserve the revision that was approved. If the model changes, treat the previous approval as needing review rather than silently reusing its dimensions.
Read the diagram as text
The overall boundary is not an inferred cutting template. The exact manufacturer document is required.
- Model/drawing revision
- Exact variant, revision A
- Overall and bowl dimensions
- Copy labelled dimensions only
- Manufacturer template
- Not supplied: do not infer
- Responsible confirmations
- Supplier and fabricator resolve compatibility
A worked example
A fictional quotation calls a sink “800 mm overall”. The buyer’s record leaves the cut-out field unfilled because no manufacturer template has been supplied. The fabricator requests the full model code and the correct template. That is a complete next action; turning 800 mm into a guessed cutting width would not be a valid completion.
Illustrative example, not a reported purchase, client project or product test.
The completed record
- Model/drawing revision
- Exact variant, revision A
- Overall and bowl dimensions
- Copy labelled dimensions only
- Manufacturer template
- Not supplied: do not infer
- Responsible confirmations
- Supplier and fabricator resolve compatibility
Download blank record (.csv) ↗Download worked example (.csv) ↗
Your own record
- □ Model/drawing revision: ____________________
- □ Overall and bowl dimensions: ____________________
- □ Manufacturer template: ____________________
- □ Responsible confirmations: ____________________
Keep the distinction clear
A drawing can contain several visually similar rectangles representing different boundaries. Label them in the record, and keep units visible. This distinction lets a non-specialist ask a precise question without pretending to specify the work. It also prevents a change of accessory or mounting style from disappearing inside a generic “sink included” line.
Where this guide stops
No cutting, plumbing, support, sealant or installation instructions. Use the exact manufacturer template and the responsible professional.
Continue with a related task
Sources and original context
The earlier topic was published 2021-06-23 under the Maria Baldwin byline. The present procedure and illustrative record are by MichaelT editorial.