Sheet metal
fabrication optimizer

True-shape nesting — the Engine API

Nesting irregular sheet-metal parts onto plate is a true-shape problem, and the CutOptim Engine API solves it over HTTP at POST /v1/optimize/nest. Send each part as a polygon outline and the plate sizes as JSON; get back the nested layout, the placement of every part and the plate count — for laser, plasma or waterjet. On a representative 272-part job the nest used 6 plates where the same parts by bounding box need 9.

• ✓True-shape nesting of arbitrary polygons (with holes), not just rectangles.
• ✓Per-sheet exclusion zones nest around a plate defect, a clamp footprint or a pre-printed area.
• ✓The honest metric is plate count on the same parts — 6 vs 9 by bounding box on a representative 272-part job — not a density percentage.
• ✓Deterministic and free to validate: POST /v1/validate/nest checks a job with no key and no quota.

POST /v1/optimize/nest
{
  "parts": [
    { "name": "gusset",
      "polygon": [[0,0],[400,0],[0,400]],
      "qty": 16, "allowedRotations": [0,90,180,270] },
    { "name": "bracket",
      "polygon": [[0,0],[350,0],[350,120],[120,120],[120,350],[0,350]],
      "qty": 10, "allowedRotations": "continuous" }
  ],
  "stock": [{ "w": 3000, "h": 1500, "qty": 12 }],
  "options": { "minSeparation": 2 }
}