By StoneCutting team · Updated
1. Send the exact replacement model and installation drawing
Include the brand and complete model number, plus the manufacturer installation PDF or a clear image of its dimension diagram. A shop description such as 60 cm or 90 cm describes an appliance category, not a universal cutout. The instructions for the exact model identify the required opening, tolerances and installation conditions. A retailer screenshot of the overall glass size is not enough. If you have not chosen a model, tell us that the enquiry is preliminary.
2. Keep existing dimensions separate from proposed dimensions
Label the existing opening width and front-to-back depth in millimetres, where those edges are safely visible. Separately label the opening required by the new appliance. Include stone thickness if known. Use a simple sketch with front, back, left and right marked so the dimensions cannot be mistaken for one another. An estimate can help start a conversation, but mark it as an estimate; it is not a final cutting instruction.
3. Do not remove a connected cooktop just to measure
If the appliance covers the opening, say that the cutout is hidden. Send the old model number if available and photos of the installation instead. Do not lift a connected appliance, reach around exposed wiring or disturb gas connections. The appropriate qualified trade must handle disconnection and reconnection. Accessible photographs can start the quote process; a final fit decision may need additional checks once the opening can be safely seen.
4. Show the stone remaining around the opening
Where safely accessible, note the distance from the opening to the front edge, the rear edge or splashback, the nearest end and any joint. Photograph existing cracks, chips, seams or earlier alterations. These details help explain the proposed change and whether the surrounding stone is suitable to retain. Do not treat a single generic margin found online as permission to enlarge your bench: the stone, installation and appliance requirements must be considered together.
5. Include the cabinet and appliance space below
Take a photo inside the cupboard only where it is safe and readily accessible. Show drawers, cabinet rails, an oven below and any visible obstruction. The replacement unit can have a different body depth or require different ventilation and clearances even when its glass looks similar. Mark anything you cannot safely see as unknown. Stone alteration does not include moving electrical services, gas work or cabinet changes unless a separate written scope explicitly says so.
6. Send a short, labelled set of photos
Include a wide view of the kitchen, an overhead view of the cooktop, a closer view of the surrounding edges and joints, and an accessible view below. Add the manufacturer diagram and your labelled sketch. Keep measurement references visible without putting weight on an exposed opening or unstable stone. Include your suburb, access details and whether the appliance has already been disconnected. You do not need to perform any cutting or dismantling to submit an enquiry.
7. Check what the written quote actually includes
The quote should describe the proposed opening change, material assumptions, access, edge finishing and any exclusions. Tell us if you switch appliance models after quoting: a similar-looking unit can change the opening and installation requirements. Measurements sent for quoting support a suitability review; they do not replace final checks against the agreed appliance instructions. If enlargement is unsuitable, a different appliance or replacement benchtop may need consideration.
Copy this checklist into your enquiry
Suburb and property access; existing stone material and thickness if known; old appliance model; proposed exact model; installation drawing; existing opening width and depth if safely visible; proposed opening width and depth from the drawing; distances to edges and joins if accessible; photos above and below; known cracks or earlier repairs; connected or disconnected status. Write unknown beside anything you cannot confirm. Send these details through our quote form or email the drawings and photos to info@stonecutting.com.au.
Manufacturer reference
Example of model-specific Bosch installation instructions — use your own appliance model
Related planning information
Questions, answered.
Can you quote if the old cooktop is still fitted?
We can start with the old model, the new model-specific installation drawing and accessible photos. Say that the opening is hidden. Further checks may be needed before the final scope can be confirmed.
Will any 90 cm cooktop fit an existing 90 cm opening?
Do not assume so. Overall appliance size, required cutout and installation clearances are separate details. Compare the exact installation drawings and the existing opening.
Can an opening that is too large simply be cut to fit?
Cutting can remove stone; it cannot make an oversized opening smaller. Send the details so alternative appliances, a different scope or replacement can be considered.
Should I book cutting before the appliance is selected?
You can enquire early, but confirm the exact appliance and its requirements before agreeing to a final cutting scope. Let us know if your selection changes.