{
  "verified_on": "2026-10-01",
  "environment": "Isolated local application, real Chromium, current frontend/backend source, OCP 7.9.3.1; cadprops-converter:recovery-v1, internal network only",
  "claims": "Representative geometry only; measurements and failure states observed, no universal compatibility or certification; no private customer models",
  "observations": [
    {
      "slug": "step-viewer",
      "status": "succeeded",
      "representation": "brep",
      "properties": {
        "bounds": {
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            0,
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          "max": [
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            30,
            20
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          "dimensions": [
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            30,
            20
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        },
        "area_mm2": 5200,
        "volume_mm3": 24000,
        "solid_count": 1,
        "face_count": 6
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      "warnings": [],
      "screenshot": "step-viewer.png",
      "input": "block.step",
      "input_sha256": "da9e92aa49673bf1a28a30cebbeb17cc77b0f10ef871129c445e875d2d21bd55",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "iges-viewer",
      "status": "succeeded",
      "representation": "brep",
      "properties": {
        "bounds": {
          "min": [
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            0,
            0
          ],
          "max": [
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            20,
            30
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          "dimensions": [
            10,
            20,
            30
          ]
        },
        "area_mm2": 2200,
        "volume_mm3": 6000,
        "solid_count": 0,
        "face_count": 6
      },
      "warnings": [
        "Volume and mass are approximate, recovered from the display mesh."
      ],
      "screenshot": "iges-viewer.png",
      "input": "box.iges",
      "input_sha256": "d7e8d1703e5265826538b417a1b2d556326ba264b6ff45e70f641dd5d8511a40",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "stl-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
        "bounds": {
          "min": [
            -5,
            -10,
            -15
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          "max": [
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            10,
            15
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          "dimensions": [
            10,
            20,
            30
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        },
        "area_mm2": 2200,
        "volume_mm3": 6000,
        "solid_count": 0,
        "face_count": 12
      },
      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "STL/OBJ do not declare a reliable physical unit. Coordinates are assumed to be mm; verify scale before using properties."
      ],
      "screenshot": "stl-viewer.png",
      "input": "box.stl",
      "input_sha256": "fb8a609be4ea3e564853fc042161e4b09c9f14265de2813b2b31280ef9c1b41f",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "obj-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
        "bounds": {
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          "dimensions": [
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            30
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        },
        "area_mm2": 2200,
        "volume_mm3": 6000,
        "solid_count": 0,
        "face_count": 12
      },
      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "STL/OBJ do not declare a reliable physical unit. Coordinates are assumed to be mm; verify scale before using properties.",
        "OBJ geometry only. Material libraries and texture images are not displayed."
      ],
      "screenshot": "obj-viewer.png",
      "input": "box.obj",
      "input_sha256": "de3de25c9108858a9d5573b4490d6e8ceeeb1c43d340642298ccbfd02e17d493",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "3mf-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
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            -10,
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          "max": [
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          "dimensions": [
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      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "3MF core triangle geometry only; manufacturing extensions are not interpreted."
      ],
      "screenshot": "3mf-viewer.png",
      "input": "box.3mf",
      "input_sha256": "9bf9946e9361f6773ba8b15e56c04c6676d1f52e1e058c08537d0ddd43feebff",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "glb-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
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      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed."
      ],
      "screenshot": "glb-viewer.png",
      "input": "box.glb",
      "input_sha256": "0a0829ee2b6770e2d051c7757a318b762707ed0c09c6006ea0edfb402847d65b",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "gltf-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
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      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed."
      ],
      "screenshot": "gltf-viewer.png",
      "input": "box.gltf",
      "input_sha256": "6606e2678a754f2fc694511a8b2652f000bed463f71a211b89568c7f1b409c9f",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "zip-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
        "bounds": {
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        },
        "area_mm2": 4400,
        "volume_mm3": 12000,
        "solid_count": 0,
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      "warnings": [
        "ZIP models share their original coordinates; totals sum instances, without subtracting overlaps. Solid difference is not available for packages.",
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "STL/OBJ do not declare a reliable physical unit. Coordinates are assumed to be mm; verify scale before using properties.",
        "OBJ geometry only. Material libraries and texture images are not displayed."
      ],
      "screenshot": "zip-viewer.png",
      "input": "models.zip",
      "input_sha256": "4c4193229cd603be6209de59ecb27b01bf2447375cbde39e5423544a4373a80e",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
    },
    {
      "slug": "dwg-viewer",
      "status": "succeeded",
      "representation": "drawing",
      "properties": {
        "bounds": {
          "min": [
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          "max": [
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        },
        "area_mm2": null,
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        "solid_count": 0,
        "face_count": 0
      },
      "warnings": [
        "Bounded 2D preview. External references, proxy objects, 3D solids and non-top-view paper viewports are not supported. Verify content against the source drawing. CAD properties are not calculated."
      ],
      "screenshot": "dwg-viewer.png",
      "input": "drawing.dxf",
      "input_sha256": "9bfda75683f38fb1163140c8c2d1c333bbb2a8bcb0dfebef9f2b0aca94e07082",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
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    {
      "slug": "parasolid-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
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      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable."
      ],
      "screenshot": "parasolid-viewer.png",
      "input": "step-x_t.x_t",
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    {
      "slug": "acis-viewer",
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      "representation": "mesh",
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      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable."
      ],
      "screenshot": "acis-viewer.png",
      "input": "step-sat.sat",
      "input_sha256": "eec8297fe6c10182060b56635038e2b9b510d7127e9a1cfe18b3eedce6523b8e",
      "source_url": "/examples/",
      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
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    {
      "slug": "jt-viewer",
      "status": "succeeded",
      "representation": "mesh",
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      "warnings": [
        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable."
      ],
      "screenshot": "jt-viewer.png",
      "input": "step-jt.jt",
      "input_sha256": "1cb6d4929217cf46d64c0ded17976b00d1fff90754db68acd4fbf04a2a7d90f6",
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      "rights": "Original CADProps analytical geometry; native X_T/SAT/JT are real exports of the original block, not renamed STEP"
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    {
      "slug": "solidworks-viewer",
      "status": "succeeded",
      "representation": "mesh",
      "properties": {
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        "Mesh-derived dimensions, area and volume are approximate. B-Rep edge/diameter measurement and solid differences are unavailable.",
        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable.",
        "Volume and mass unavailable: at least one mesh is not closed with consistent outward winding."
      ],
      "screenshot": "solidworks-viewer.png",
      "input": "nist_ctc_01_asme1_rd_sw1802.SLDPRT",
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      "source_url": "https://www.nist.gov/ctl/smart-connected-systems-division/smart-connected-manufacturing-systems-group/mbe-pmi-0",
      "rights": "NIST unrestricted-use test case; attribution, no endorsement; native source link only"
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    {
      "slug": "catia-viewer",
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      "representation": "mesh",
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        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable."
      ],
      "screenshot": "catia-viewer.png",
      "input": "SS_PL_8x6x0.5_B.CATPart",
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      "source_url": "https://github.com/sheetd/BatchProcess",
      "rights": "MIT; original license retained in this evidence directory"
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      "representation": "mesh",
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        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable.",
        "Volume and mass unavailable: at least one mesh is not closed with consistent outward winding."
      ],
      "screenshot": "inventor-viewer.png",
      "input": "INV_nist_ctc_01_asme1_2021.ipt",
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        "Static geometry and base colors only; textures, animation, skinning and lights are not displayed.",
        "Displayed from converted triangle geometry. Mesh measurements are approximate; B-Rep measurement and solid differences are unavailable.",
        "Volume and mass unavailable: at least one mesh is not closed with consistent outward winding."
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      "screenshot": "nx-viewer.png",
      "input": "nist_ctc_01_asme1_nx1980_rd.prt",
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      "rights": "NIST unrestricted-use test case; attribution, no endorsement; native source link only"
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      "screenshot": "step-to-stl.png",
      "download": "step-to-stl.stl",
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      "screenshot": "step-to-obj.png",
      "download": "step-to-obj.zip",
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      "download": "step-to-3mf.3mf",
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