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Cut-to-size sandwich panels: drawings, yield and orientation

Prepare a cut list that accounts for saw cuts, trimming, face direction and handed parts. Compare finished-piece yield rather than sheet area alone.

Cut-to-size sandwich panels: drawings, yield and orientation
AI-generated material illustration. Not a tested product configuration or a completed Banarta project.

Finished-piece dimensions and raw-sheet dimensions are different order quantities. A cut-to-size sandwich panel enquiry should identify every finished component and the machining scope. Sheet area alone cannot tell a buyer how many usable parts will be delivered.

Why an exact area match may not work

Suppose a hypothetical raw sheet is 2,400 × 1,200 mm and the required pieces are 600 × 600 mm. A simple grid suggests eight pieces. But four 600 mm lengths already consume the entire 2,400 mm dimension; three cuts between them need additional material. Any edge trimming makes the conflict larger.

That example does not prove a universal yield. The solution might involve a larger raw sheet, a different approved finished size or another cutting layout. Ask the fabricator to return a layout using its actual cutting allowance and agreed tolerances. Never silently reduce finished dimensions to make a layout fit.

Single part specification · uniform grid

Rectangular panel grid planner

Check how many identical rectangles fit in a uniform grid, how many sheets that grid requires, and the demand on the last sheet.

Use the sheet dimensions remaining after agreed edge trimming. Enter the fabricator's cutting allowance. This planner reserves kerf between adjacent pieces only; it does not add an outer-edge allowance or validate an edge-release cut.

This compares uniform rectangular grids only. It is not mixed nesting, an optimum cutting plan, a machine cutting sequence, or a guarantee of supply or finished-part yield. Confirm face direction, tolerances, usable dimensions and processing allowances with the fabricator.

All dimensions are in mm. Use a decimal point and up to 3 decimal places, without commas or units. Dimensions: 0.001–100,000 mm. Kerf: 0–100,000 mm. Quantity: 1–1,000,000 whole pieces. These are calculator limits, not manufacturing tolerances.

How to check the grid

On each axis, the count must satisfy: count × part dimension + (count − 1) × kerf ≤ usable sheet dimension. Multiply the two axis counts for capacity. Divide required pieces by capacity and round up for sheets in that grid. If an axis holds no piece, that orientation does not fit.

Do not use an area-only division to prove the parts fit. Unallocated space may include offcuts and cutting allowances; it is not automatically waste or reusable stock.

Send a part schedule with the drawing

FieldWhat to identify
Part identityUnique number, quantity and drawing revision
Finished geometryLength, width, thickness, tolerances and openings
Face orientationFace A/B, inside/outside and any surface direction
Handed partsLeft/right variants and whether mirroring is permitted
Processing scopeEdge treatment, holes, inserts or other requested operations
Pack identityPart labels and installation sequence

A rectangular part that appears rotatable on a drawing may have directional film, grain, different skins or a designated outside face. Mark rotation rules explicitly. Where skins differ, a mirrored part can be materially different even when its outline matches.

Compare three measures of yield

Record purchased raw area, accepted finished area and reusable offcuts separately. A supplier offering a lower raw-sheet price may produce a higher finished-part cost if the available sheet size fits your components poorly. Conversely, a higher yield does not help if it depends on dimensions outside your tolerance.

For an original arithmetic example, 18 m² of accepted finished parts from 24 m² of purchased sheets is 75% area yield. The remaining 6 m² may include cuts, trimming and reusable offcuts; it should not all be called scrap without examining the layout. This is not a Banarta production-yield claim.

Resolve exceptions before approval

  • Check that the returned layout uses the current part quantities and revisions.
  • Identify any proposed size, material or orientation substitution.
  • Confirm which machining operations are available and included in the price.
  • Agree responsibility for reusable offcuts and any spares.
  • Approve a representative part or sample where the fit requires it.

Changes after production approval need a revised schedule showing already-cut, in-process and remaining quantities. Do not overwrite the drawing number without updating the revision on labels and packing records.

Link the cutting plan to the panel construction

See XPS core sandwich panel options and the drawing-led procurement guide. Send the part schedule and face requirements to Banarta. Specific cutting, inserts and edge operations remain subject to quotation confirmation.

Scope

This is a purchasing and drawing-coordination method. The examples do not state available Banarta sheet sizes, machine allowances or manufacturing tolerances. Obtain those values from the supplier for the actual construction and processing route.

Choose products for your enquiry

Send the product link or model, application, dimensions, quantity and destination. Include drawings or required technical documents where relevant; mark undecided details for review.

Prepare your enquiry with the trade enquiry sheet (.xlsx)

Discuss your requirements with Banarta
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