{
  "title": "ComMarker B4 60W MOPA — colours from single plates DB",
  "dataset": "b4_measured",
  "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
  "generated": "2026-10-17T03:05:39Z",
  "source": "live /srv/data/laserview-plates/materials.json (regenerated; lab from hex or prior measured bak)",
  "note": "one colour = one layer; sub-layers multi-pass. Sub-layer .clb/.lbrn2 UNVERIFIED until Hank LightBurn open-test.",
  "count": 79,
  "entries": [
    {
      "id": "polished_ss:purple",
      "cell_id": "A6",
      "color_name": "R1-0106 deep purple-black",
      "hex": "#3a2828",
      "display_hex": "#6f5050",
      "lab": [
        18.22,
        8.19,
        3.42
      ],
      "power_pct": 15,
      "speed_mms": 567,
      "freq_khz": 280,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "hank_verified",
      "confidence_label": "Hank verified",
      "status": "verified",
      "citation": "A6",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "Hank by eye",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": {
        "color": "deep purple",
        "hex": null,
        "ok": true,
        "by": "Hank",
        "note": "verified by eye (Hank) 2026-10-10: row 1 F+ (15%, 567 mm/s, 280 kHz, 80 ns, 0.004, 2 passes)",
        "large_field_2026_10_15": {
          "by": "Hank",
          "ok": true,
          "verified": true,
          "material": "24.5mm polished stainless",
          "color": "lavender/light purple",
          "settings": "15%, 567 mm/s, 280 kHz, 80 ns, 0.004, crosshatch x2",
          "note": "Verified by Hank 2026-10-15 on large field wedges (24.5mm polished SS). Big areas came out much paler than small test cells (large fills run hotter). Purple vs slate-blue mapping could be swapped (medium-low confidence).",
          "avoid_on_fields": false
        }
      },
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#3b3135",
          "display_hex": "#726067",
          "crop": "round1/crops_angle1/R1-0106.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#3a2828",
          "display_hex": "#6f5050",
          "crop": "round1/crops_angle2/R1-0106.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#453e46",
          "display_hex": "#837785",
          "crop": "round1/crops_angle3/R1-0106.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#332a2b",
          "display_hex": "#635355",
          "crop": "round1/crops_angle4/R1-0106.jpg"
        }
      ],
      "scan": {
        "hex": "#372921",
        "display_hex": "#6a5244",
        "crop": "round1/crops/R1-0106.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#2f221b"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#372820"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#3f3128"
          }
        ]
      },
      "viewed": {
        "hex": "#3a2828",
        "display_hex": "#6f5050",
        "angle_spread_dE": 12.1,
        "hue_range_deg": 62,
        "note": "strongly angle-dependent (iridescent)",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "red/rose",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified by eye (Hank) + verified from angled photos + flatbed scan + large-field wedges verified by Hank 2026-10-15"
    },
    {
      "id": "polished_ss:deep_blue",
      "cell_id": "H5",
      "color_name": "R1-0805 / 8F deep blue (2 passes)",
      "hex": "#444e53",
      "display_hex": "#81929c",
      "lab": [
        32.44,
        -2.58,
        -4.65
      ],
      "power_pct": 7.5,
      "speed_mms": 700,
      "freq_khz": 119,
      "pulse_ns": 60,
      "interval_mm": 0.005,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.005,
      "line_width_mm": 0.005,
      "line_interval_mm": 0.005,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "hank_verified",
      "confidence_label": "Hank verified",
      "status": "verified",
      "citation": "H5",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "Hank by eye",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": {
        "color": "deep blue after pass 2; changed on pass 3",
        "hex": null,
        "ok": false,
        "by": "Hank",
        "note": "Hank: row 8 F- was DEEP BLUE until the 3rd pass changed it -> deep blue lead at 2 passes",
        "large_field_2026_10_15": {
          "by": "Hank",
          "ok": true,
          "verified": true,
          "material": "24.5mm polished stainless",
          "color": "slate blue-grey",
          "settings": "7.5%, 700 mm/s, 119 kHz, 60 ns, 0.005, x2",
          "note": "Verified by Hank 2026-10-15 on large field wedges (24.5mm polished SS). Big areas came out much paler than small test cells (large fills run hotter). Purple vs slate-blue mapping could be swapped (medium-low confidence).",
          "avoid_on_fields": false,
          "note_passes": "large-field burn used 2 passes (cell recipe may list 3)"
        }
      },
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#464f53",
          "display_hex": "#84949b",
          "crop": "round1/crops_angle1/R1-0805.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#414648",
          "display_hex": "#7b8487",
          "crop": "round1/crops_angle2/R1-0805.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#41464a",
          "display_hex": "#7b848a",
          "crop": "round1/crops_angle3/R1-0805.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#444e53",
          "display_hex": "#81929c",
          "crop": "round1/crops_angle4/R1-0805.jpg"
        }
      ],
      "scan": {
        "hex": "#28211a",
        "display_hex": "#504337",
        "crop": "round1/crops/R1-0805.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#2e2c27"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#2c231c"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#332a22"
          }
        ]
      },
      "viewed": {
        "hex": "#444e53",
        "display_hex": "#81929c",
        "angle_spread_dE": 4.3,
        "hue_range_deg": 3,
        "note": "stable across angles",
        "best_photo": "angle4"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "gray",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified by eye (Hank) + verified from angled photos + flatbed scan + large-field wedges verified by Hank 2026-10-15"
    },
    {
      "id": "polished_ss:blue",
      "cell_id": "I4",
      "color_name": "R1-0904 good blue",
      "hex": "#20354c",
      "display_hex": "#42678e",
      "lab": [
        21.58,
        -0.76,
        -16.46
      ],
      "power_pct": 15,
      "speed_mms": 1200,
      "freq_khz": 230,
      "pulse_ns": 60,
      "interval_mm": 0.005,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.005,
      "line_width_mm": 0.005,
      "line_interval_mm": 0.005,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "hank_verified",
      "confidence_label": "Hank verified",
      "status": "verified",
      "citation": "I4",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "Hank by eye",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": {
        "color": "good blue",
        "hex": null,
        "ok": true,
        "by": "Hank",
        "tentative": true,
        "note": "verified by eye (Hank) 2026-10-10: '9 10' = good blue - tentatively row 9 col 100 (15%, 1200 mm/s, 230 kHz, 60 ns, 0.005, 2 passes); awaiting clarification (could mean rows 9/10)",
        "large_field_2026_10_15": {
          "by": "Hank",
          "ok": true,
          "verified": true,
          "material": "24.5mm polished stainless",
          "color": "pale grey-green/silver",
          "settings": "15%, 1200 mm/s, 230 kHz, 60 ns, 0.005, x2",
          "note": "Verified by Hank 2026-10-15 on large field wedges (24.5mm polished SS). Big areas came out much paler than small test cells (large fills run hotter). Purple vs slate-blue mapping could be swapped (medium-low confidence).",
          "avoid_on_fields": false
        }
      },
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#1f3348",
          "display_hex": "#406388",
          "crop": "round1/crops_angle1/R1-0904.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#203245",
          "display_hex": "#436183",
          "crop": "round1/crops_angle2/R1-0904.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#1d2b3c",
          "display_hex": "#3c5572",
          "crop": "round1/crops_angle3/R1-0904.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#20354c",
          "display_hex": "#42678e",
          "crop": "round1/crops_angle4/R1-0904.jpg"
        }
      ],
      "scan": {
        "hex": "#1c1915",
        "display_hex": "#3b362e",
        "crop": "round1/crops/R1-0904.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#242728"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#1e1b14"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#222120"
          }
        ]
      },
      "viewed": {
        "hex": "#20354c",
        "display_hex": "#42678e",
        "angle_spread_dE": 6.0,
        "hue_range_deg": 2,
        "note": "stable across angles",
        "best_photo": "angle4"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "blue",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified by eye (Hank) + verified from angled photos + flatbed scan + large-field wedges verified by Hank 2026-10-15"
    },
    {
      "id": "polished_ss:gold",
      "cell_id": "L2",
      "color_name": "R1-1202 olive-brown (closest to gold; no true gold measured)",
      "hex": "#2a1f0c",
      "display_hex": "#53401f",
      "lab": [
        12.43,
        2.56,
        13.57
      ],
      "power_pct": 48.4,
      "speed_mms": 317,
      "freq_khz": 61.5,
      "pulse_ns": 60,
      "interval_mm": 0.0287,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.0287,
      "line_width_mm": 0.0287,
      "line_interval_mm": 0.0287,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "low",
      "confidence_label": "low",
      "status": "untested",
      "citation": "L2",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4 R1-1202 measured; GAP: no verified gold",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#2c2110",
          "display_hex": "#574427",
          "crop": "round1/crops_angle1/R1-1202.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#160f04",
          "display_hex": "#302410",
          "crop": "round1/crops_angle2/R1-1202.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#2a1f0c",
          "display_hex": "#53401f",
          "crop": "round1/crops_angle3/R1-1202.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#0f0c09",
          "display_hex": "#24201a",
          "crop": "round1/crops_angle4/R1-1202.jpg"
        }
      ],
      "scan": {
        "hex": "#5c5332",
        "display_hex": "#ab9b61",
        "crop": "round1/crops/R1-1202.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#433c30"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#463b2a"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#534d32"
          }
        ]
      },
      "viewed": {
        "hex": "#2a1f0c",
        "display_hex": "#53401f",
        "angle_spread_dE": 15.4,
        "hue_range_deg": 2,
        "note": "mild angle shift",
        "best_photo": "angle3"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "brown",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:black_deep",
      "cell_id": "L5",
      "color_name": "R1-1205 measured black #100e06",
      "hex": "#100e06",
      "display_hex": "#272215",
      "lab": [
        3.9,
        -0.2,
        3.22
      ],
      "power_pct": 56.3,
      "speed_mms": 242,
      "freq_khz": 264.2,
      "pulse_ns": 100,
      "interval_mm": 0.0145,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.0145,
      "line_width_mm": 0.0145,
      "line_interval_mm": 0.0145,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "low",
      "confidence_label": "low",
      "status": "untested",
      "citation": "L5",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "photo only)",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#0a0704",
          "display_hex": "#1c170d",
          "crop": "round1/crops_angle1/R1-1205.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#100e06",
          "display_hex": "#272215",
          "crop": "round1/crops_angle2/R1-1205.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#110e08",
          "display_hex": "#282318",
          "crop": "round1/crops_angle3/R1-1205.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#090803",
          "display_hex": "#1b170b",
          "crop": "round1/crops_angle4/R1-1205.jpg"
        }
      ],
      "scan": {
        "hex": "#241c11",
        "display_hex": "#493c28",
        "crop": "round1/crops/R1-1205.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#221b11"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#2f261b"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#221b12"
          }
        ]
      },
      "viewed": {
        "hex": "#100e06",
        "display_hex": "#272215",
        "angle_spread_dE": 2.5,
        "hue_range_deg": 0,
        "note": "stable across angles",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "black",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:purple_alt",
      "cell_id": "E6",
      "color_name": "R1-0506 purple",
      "hex": "#33313b",
      "display_hex": "#646072",
      "lab": [
        20.95,
        3.57,
        -6.21
      ],
      "power_pct": 8.2,
      "speed_mms": 180,
      "freq_khz": 196,
      "pulse_ns": 200,
      "interval_mm": 0.025,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.025,
      "line_width_mm": 0.025,
      "line_interval_mm": 0.025,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "low",
      "confidence_label": "low",
      "status": "untested",
      "citation": "E6",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4 R1-0506 measured",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#33313b",
          "display_hex": "#646072",
          "crop": "round1/crops_angle1/R1-0506.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#352e2e",
          "display_hex": "#675a5b",
          "crop": "round1/crops_angle2/R1-0506.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#343135",
          "display_hex": "#666067",
          "crop": "round1/crops_angle3/R1-0506.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#312b2f",
          "display_hex": "#60555c",
          "crop": "round1/crops_angle4/R1-0506.jpg"
        }
      ],
      "scan": {
        "hex": "#38342d",
        "display_hex": "#6c6558",
        "crop": "round1/crops/R1-0506.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#3a332c"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#413d30"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#3d4038"
          }
        ]
      },
      "viewed": {
        "hex": "#33313b",
        "display_hex": "#646072",
        "angle_spread_dE": 7.3,
        "hue_range_deg": 38,
        "note": "stable across angles",
        "best_photo": "angle1"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "purple/magenta",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:hd_fill_black",
      "cell_id": "polished_ss:hd_fill_black",
      "color_name": "HIGH DEFINITION FILL BLACK (layer stack)",
      "hex": null,
      "display_hex": null,
      "lab": null,
      "power_pct": 15.0,
      "speed_mms": 567.0,
      "freq_khz": 280.0,
      "pulse_ns": 80.0,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": null,
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 16,
      "has_cut_settings": true,
      "confidence": "hank_verified",
      "confidence_label": "Hank verified",
      "status": "verified",
      "citation": null,
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "Hank by eye 2026-10-15",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": {
        "ok": true,
        "by": "Hank",
        "color": "HIGH DEFINITION FILL BLACK (layer stack)"
      }
    },
    {
      "id": "polished_ss:R1-0101",
      "cell_id": "A1",
      "color_name": "dark green",
      "hex": "#2a2b19",
      "display_hex": "#535637",
      "lab": [
        23.65,
        -3.66,
        8.02
      ],
      "power_pct": 12.0,
      "speed_mms": 567,
      "freq_khz": 200.0,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "medium",
      "confidence_label": "medium",
      "status": "measured",
      "citation": "A1",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified from angled photos + flatbed scan",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#3c3f37",
          "display_hex": "#73796a",
          "crop": "round1/crops_angle1/R1-1002.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#3f4541",
          "display_hex": "#78827b",
          "crop": "round1/crops_angle2/R1-1002.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#383a2c",
          "display_hex": "#6b6f57",
          "crop": "round1/crops_angle3/R1-1002.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#3b4645",
          "display_hex": "#718482",
          "crop": "round1/crops_angle4/R1-1002.jpg"
        }
      ],
      "scan": {
        "hex": "#3e2d21",
        "display_hex": "#775844",
        "crop": "round1/crops/R1-1002.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#49453a"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#463728"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#4e3f2a"
          }
        ]
      },
      "viewed": {
        "hex": "#383a2c",
        "display_hex": "#6b6f57",
        "angle_spread_dE": 10.1,
        "hue_range_deg": 74,
        "note": "strongly angle-dependent (iridescent)",
        "best_photo": "angle3"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "green",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:R1-0102",
      "cell_id": "A2",
      "color_name": "olive brown",
      "hex": "#332f1c",
      "display_hex": "#635d3b",
      "lab": [
        8.92,
        1.55,
        10.18
      ],
      "power_pct": 15.0,
      "speed_mms": 567,
      "freq_khz": 200.0,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "medium",
      "confidence_label": "medium",
      "status": "measured",
      "citation": "A2",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified from angled photos + flatbed scan",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#120c06",
          "display_hex": "#292014",
          "crop": "round1/crops_angle1/R1-1206.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#211808",
          "display_hex": "#433418",
          "crop": "round1/crops_angle2/R1-1206.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#20190e",
          "display_hex": "#423623",
          "crop": "round1/crops_angle3/R1-1206.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#110c04",
          "display_hex": "#281f0e",
          "crop": "round1/crops_angle4/R1-1206.jpg"
        }
      ],
      "scan": {
        "hex": "#423824",
        "display_hex": "#7e6c49",
        "crop": "round1/crops/R1-1206.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#372e20"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#3d3020"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#423a2b"
          }
        ]
      },
      "viewed": {
        "hex": "#211808",
        "display_hex": "#433418",
        "angle_spread_dE": 8.9,
        "hue_range_deg": 2,
        "note": "stable across angles",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 0,
      "bidirectional": true,
      "color_family": "brown",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:R1-0103",
      "cell_id": "A3",
      "color_name": "olive brown",
      "hex": "#353122",
      "display_hex": "#666046",
      "lab": [
        8.92,
        1.55,
        10.18
      ],
      "power_pct": 18.0,
      "speed_mms": 567,
      "freq_khz": 200.0,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "medium",
      "confidence_label": "medium",
      "status": "measured",
      "citation": "A3",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified from angled photos + flatbed scan",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#120c06",
          "display_hex": "#292014",
          "crop": "round1/crops_angle1/R1-1206.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#211808",
          "display_hex": "#433418",
          "crop": "round1/crops_angle2/R1-1206.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#20190e",
          "display_hex": "#423623",
          "crop": "round1/crops_angle3/R1-1206.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#110c04",
          "display_hex": "#281f0e",
          "crop": "round1/crops_angle4/R1-1206.jpg"
        }
      ],
      "scan": {
        "hex": "#423824",
        "display_hex": "#7e6c49",
        "crop": "round1/crops/R1-1206.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#372e20"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#3d3020"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#423a2b"
          }
        ]
      },
      "viewed": {
        "hex": "#211808",
        "display_hex": "#433418",
        "angle_spread_dE": 8.9,
        "hue_range_deg": 2,
        "note": "stable across angles",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 0,
      "bidirectional": true,
      "color_family": "brown",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:R1-0104",
      "cell_id": "A4",
      "color_name": "olive brown",
      "hex": "#363026",
      "display_hex": "#685e4d",
      "lab": [
        8.92,
        1.55,
        10.18
      ],
      "power_pct": 20.0,
      "speed_mms": 567,
      "freq_khz": 200.0,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "medium",
      "confidence_label": "medium",
      "status": "measured",
      "citation": "A4",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified from angled photos + flatbed scan",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#120c06",
          "display_hex": "#292014",
          "crop": "round1/crops_angle1/R1-1206.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#211808",
          "display_hex": "#433418",
          "crop": "round1/crops_angle2/R1-1206.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#20190e",
          "display_hex": "#423623",
          "crop": "round1/crops_angle3/R1-1206.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#110c04",
          "display_hex": "#281f0e",
          "crop": "round1/crops_angle4/R1-1206.jpg"
        }
      ],
      "scan": {
        "hex": "#423824",
        "display_hex": "#7e6c49",
        "crop": "round1/crops/R1-1206.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#372e20"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#3d3020"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#423a2b"
          }
        ]
      },
      "viewed": {
        "hex": "#211808",
        "display_hex": "#433418",
        "angle_spread_dE": 8.9,
        "hue_range_deg": 2,
        "note": "stable across angles",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 0,
      "bidirectional": true,
      "color_family": "brown",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:R1-0105",
      "cell_id": "A5",
      "color_name": "dark gray",
      "hex": "#393730",
      "display_hex": "#6d6b5e",
      "lab": [
        38.88,
        0.45,
        -1.9
      ],
      "power_pct": 15.0,
      "speed_mms": 567,
      "freq_khz": 140.0,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "medium",
      "confidence_label": "medium",
      "status": "measured",
      "citation": "A5",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified from angled photos + flatbed scan",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#5b5b5f",
          "display_hex": "#a8a9af",
          "crop": "round1/crops_angle1/R1-1203.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#5b5c5f",
          "display_hex": "#a8abaf",
          "crop": "round1/crops_angle2/R1-1203.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#76787a",
          "display_hex": "#d7dbdf",
          "crop": "round1/crops_angle3/R1-1203.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#4c4d4f",
          "display_hex": "#8f9194",
          "crop": "round1/crops_angle4/R1-1203.jpg"
        }
      ],
      "scan": {
        "hex": "#c6b5a1",
        "display_hex": "#ffffff",
        "crop": "round1/crops/R1-1203.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#969691"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#a99f93"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#cbc4be"
          }
        ]
      },
      "viewed": {
        "hex": "#5b5b5f",
        "display_hex": "#a8a9af",
        "angle_spread_dE": 17.4,
        "hue_range_deg": 0,
        "note": "mild angle shift",
        "best_photo": "angle1"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "gray",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified from angled photos + flatbed scan"
    },
    {
      "id": "polished_ss:R1-0106",
      "cell_id": "A6",
      "color_name": "dark red",
      "hex": "#3a2828",
      "display_hex": "#6f5050",
      "lab": [
        18.22,
        8.19,
        3.42
      ],
      "power_pct": 15.0,
      "speed_mms": 567,
      "freq_khz": 280.0,
      "pulse_ns": 80,
      "interval_mm": 0.004,
      "passes": 2,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.004,
      "line_width_mm": 0.004,
      "line_interval_mm": 0.004,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "hank_verified",
      "confidence_label": "Hank verified",
      "status": "verified",
      "citation": "A6",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified by eye (Hank) + verified from angled photos + flatb",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": {
        "color": "deep purple",
        "hex": null,
        "ok": true,
        "by": "Hank",
        "note": "verified by eye (Hank) 2026-10-10: row 1 F+ (15%, 567 mm/s, 280 kHz, 80 ns, 0.004, 2 passes)",
        "large_field_2026_10_15": {
          "by": "Hank",
          "ok": true,
          "verified": true,
          "material": "24.5mm polished stainless",
          "color": "lavender/light purple",
          "settings": "15%, 567 mm/s, 280 kHz, 80 ns, 0.004, crosshatch x2",
          "note": "Verified by Hank 2026-10-15 on large field wedges (24.5mm polished SS). Big areas came out much paler than small test cells (large fills run hotter). Purple vs slate-blue mapping could be swapped (medium-low confidence).",
          "avoid_on_fields": false
        }
      },
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#3b3135",
          "display_hex": "#726067",
          "crop": "round1/crops_angle1/R1-0106.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#3a2828",
          "display_hex": "#6f5050",
          "crop": "round1/crops_angle2/R1-0106.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#453e46",
          "display_hex": "#837785",
          "crop": "round1/crops_angle3/R1-0106.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#332a2b",
          "display_hex": "#635355",
          "crop": "round1/crops_angle4/R1-0106.jpg"
        }
      ],
      "scan": {
        "hex": "#372921",
        "display_hex": "#6a5244",
        "crop": "round1/crops/R1-0106.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#2f221b"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#372820"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#3f3128"
          }
        ]
      },
      "viewed": {
        "hex": "#3a2828",
        "display_hex": "#6f5050",
        "angle_spread_dE": 12.1,
        "hue_range_deg": 62,
        "note": "strongly angle-dependent (iridescent)",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 90,
      "bidirectional": true,
      "color_family": "red/rose",
      "grid_id": "B4-R1",
      "unmarked": false,
      "verification": "verified by eye (Hank) + verified from angled photos + flatbed scan + large-field wedges verified by Hank 2026-10-15"
    },
    {
      "id": "polished_ss:R1-0201",
      "cell_id": "B1",
      "color_name": "olive brown",
      "hex": "#4a4339",
      "display_hex": "#8b7f6d",
      "lab": [
        8.92,
        1.55,
        10.18
      ],
      "power_pct": 28.0,
      "speed_mms": 200,
      "freq_khz": 440.0,
      "pulse_ns": 4,
      "interval_mm": 0.01,
      "passes": 1,
      "crosshatch": "crosshatch",
      "mode": "fill",
      "dot_width_mm": 0.01,
      "line_width_mm": 0.01,
      "line_interval_mm": 0.01,
      "sublayer_count": 1,
      "has_cut_settings": true,
      "confidence": "medium",
      "confidence_label": "medium",
      "status": "measured",
      "citation": "B1",
      "photo_url": null,
      "lbrn2_urls": [],
      "material": "polished_ss",
      "source": "b4_measured (laserview), verified from angled photos + flatbed scan",
      "machine": "ComMarker B4 60W MOPA, 110 mm lens, LightBurn 1.7.08",
      "one_colour_one_layer": true,
      "sublayer_serialization_unverified": true,
      "verified_by_eye": null,
      "photo_readings": [
        {
          "photo": "angle1",
          "hex": "#120c06",
          "display_hex": "#292014",
          "crop": "round1/crops_angle1/R1-1206.jpg"
        },
        {
          "photo": "angle2",
          "hex": "#211808",
          "display_hex": "#433418",
          "crop": "round1/crops_angle2/R1-1206.jpg"
        },
        {
          "photo": "angle3",
          "hex": "#20190e",
          "display_hex": "#423623",
          "crop": "round1/crops_angle3/R1-1206.jpg"
        },
        {
          "photo": "angle4",
          "hex": "#110c04",
          "display_hex": "#281f0e",
          "crop": "round1/crops_angle4/R1-1206.jpg"
        }
      ],
      "scan": {
        "hex": "#423824",
        "display_hex": "#7e6c49",
        "crop": "round1/crops/R1-1206.jpg",
        "note": "scan-measured (flatbed, may under-report interference colours like blue/purple - direct on-axis light)",
        "unmarked": false,
        "alt": [
          {
            "scan": "r1_scan_600.png",
            "hex": "#372e20"
          },
          {
            "scan": "r1_scan_600_angled.png",
            "hex": "#3d3020"
          },
          {
            "scan": "r1_scan_600_angled2.png",
            "hex": "#423a2b"
          }
        ]
      },
      "viewed": {
        "hex": "#211808",
        "display_hex": "#433418",
        "angle_spread_dE": 8.9,
        "hue_range_deg": 2,
        "note": "stable across angles",
        "best_photo": "angle2"
      },
      "round": 1,
      "angle_increment_deg": 0,
      "bidirectional": true,
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      "grid_id": "B4-R1",
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