How edgeband lengths in the BOQ are calculated

See how extensions, edge profiles, pre-milling, cut shapes and wastage adjust each band's BOQ length so you can reconcile the totals.

1. Each panel carries up to five edgebands — left, right, front, back, and a 'cut' edgeband for the diagonal/corner edge of L-shaped, pentagonal, triangular and sketch-shaped panels — each with its own material. The BOQ length of a band is not simply the panel edge length. Verified formula per band: base edge length; plus the panel's extensions along that edge's axis when the corresponding panel dimension is not fixed (left/right bands grow by front+back extensions, front/back bands by left+right extensions); minus the depths of any edge profiles attached on the perpendicular edges; plus pre-milling allowance for each end that also carries a band; plus the per-side edgeband wastage from BOQ preferences — added once per band, and twice for the cut edgeband on L-shaped panels because it has two segments. Note that the four directional bands (left, right, front, back) deliberately bill the full rectangular side lengths even on shaped or sketch panels, because users typically apply edgebands before the CNC cut, so that extra length is real consumption; only the cut edgeband reflects the final profile. Cut edgeband geometry: L-shaped = sum of the two inner-corner segments; one L-shaped variant instead bills the front step plus the riser; triangular = the hypotenuse; pentagonal = the slanted corner edge; sketch-shaped panels bill the total length of their non-coincident edges, counting curved edges as arc length. In addition, when a panel design has cut shapes marked to receive a cut edgeband, the perimeter of each such cut shape is added to the cut edgeband length — once per copy for repeated shapes — and this extra length is added without any edgeband wastage. So a client reconciling BOQ edgeband totals against raw panel dimensions will always see systematic differences — that is wastage plus pre-milling plus extensions minus profiles, plus any cut-shape perimeters, and for shaped panels the pre-cut rectangular banding, not a computation bug. To reconcile exactly, pull the 'edgeband wastage per side' BOQ preference, the panel's pre-milling values, its extensions and edge profiles, and the perimeters of any cut shapes on the panel design that have a cut edgeband applied.

2. The extra wastage per side is entered as a preference value (the 'edgeband wastage per side' BOQ preference).

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3. The extra wastage per side is then added into the edgeband length used by production calculations — once per band, and twice for the cut edgeband on L-shaped panels.