{
  "id": "city-handheld-angle-grinder",
  "type": "model",
  "title": "手持ちアングルグラインダー",
  "titleEn": "Handheld angle grinder",
  "description": "金属保守作業台に横置きする携帯研削工具。長いモーター胴、後方握り、横の補助ハンドル、直角ギア部、固定研削円盤と締付フランジ、作業側を開けた半周ガード、通気部とスイッチを造形。据置両頭グラインダーとは異なる手持ち姿勢です。円盤・補助握りを含む一式1点で、回転・研削・電装・ガード調整は実装せず、保護性能や実用品安全性は未検証です。 ゲーム・可視化向け。製造・構造設計・3Dプリント用途は未検証。 外接寸法（X×Y×Z）0.260 × 0.133 × 0.441 m、7,164三角形。単位m・Y-up、水平中央の接地用原点、最下点Y=0。部品ごとの重複UV0と単色PBR材質を収録し、画像テクスチャ・UV2・コライダー・LOD・リグ・動作は付属しません。静的表示用でUnity/VRChat実機検証は未実施。STLはm・Y-up座標の形状のみで色・材質・UV・階層を含みません。",
  "descriptionEn": "A portable grinding-tool prop resting on a maintenance bench, with long motor body, rear grip, side auxiliary handle, right-angle gear head, fixed abrasive wheel and clamping flange, half-wrap guard exposing the working side, vents and switch. It differs from a stationary double-wheel bench grinder. Disc and auxiliary grip belong to one assembly. Rotation, grinding, electrical operation and guard adjustment are absent; protective performance and real tool safety are unvalidated. For games and visualization; not validated for manufacture, structural engineering or 3D printing. Bounding dimensions (X×Y×Z): 0.260 × 0.133 × 0.441 m; 7,164 triangles. Metres, Y-up, horizontally centered placement origin with minimum Y=0, not an articulation or wall-mount pivot. Includes overlapping component UV0 and constant-color PBR materials, with no image textures, unique UV2, colliders, LOD, rig or runtime behavior. Static visualization only; Unity/VRChat editor and runtime tests have not been performed. STL uses metre-valued Y-up coordinates and contains geometry only, without color, materials, UVs or hierarchy.",
  "category": "urban",
  "tags": [
    "city",
    "street",
    "original",
    "tool",
    "grinder",
    "maintenance",
    "グラインダー"
  ],
  "author": "Xenoah",
  "license": "CC-BY-4.0",
  "version": "1.0.0",
  "status": "public",
  "created": "2026-10-14",
  "updated": "2026-10-14",
  "thumbnail": "https://raw.githubusercontent.com/Xenoah/meshcopia/7f829d09a66d156c7f2ca19f2ea2ed88c015a01c/content/assets/city-handheld-angle-grinder/preview.png",
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  "unit": "m",
  "upAxis": "Y",
  "triangles": 7164,
  "dimensions": [
    0.26,
    0.133,
    0.440974
  ],
  "uv": "Per-component primitive or automatically unwrapped UVs. Overlapping between components; not a packed unique lightmap atlas. Solid-color PBR materials; no external textures. STL has no colors or UVs.",
  "provenance": {
    "method": "Original AI-agent-authored procedural city geometry",
    "tool": "Blender 4.3.2; Meshcopia original city expansion generator 1.0",
    "rights": "Original geometry and material design created for Xenoah Meshcopia under the owner request for CC-BY-4.0 publication. No third-party meshes, scans, brands, logos or font files.",
    "generatorUrl": "https://github.com/Xenoah/meshcopia/blob/main/scripts/city_expansion/frozen/batch-036/scripts/city_expansion/portable_power_tools.py",
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    "sourceRecipeSha256": "bf1f93fc524a0c2f8d49ef526a3158934b73d1ad0bd28340cd4d68c63c31e27e",
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    "alternateFormat": "STL triangulated from the exact reimported GLB, metre-valued Y-up coordinates. No printability or manufacture validation.",
    "stlSha256": "dc3bd40e739b7270492f4a0d73723b334cdc4f402eaf52a5105c96cff0475d04"
  },
  "usages": [
    {
      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
      "sourcePaths": [
        "scripts/city_expansion/frozen/batch-036/scripts/city_expansion/portable_power_tools.py",
        "scripts/city_expansion/frozen/batch-036/scripts/city_expansion/common.py"
      ],
      "selectors": [
        "city-handheld-angle-grinder"
      ],
      "context": "Original city asset created for this library. No external deployment or reuse claimed."
    }
  ],
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  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-handheld-angle-grinder.json",
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        "filename": "LICENSE.txt",
        "sha256": "ca84670fa864780cb874fb54f217b92c46ebd0273305ce5b37c3c177344eb12d",
        "text": "Handheld angle grinder by Xenoah / Meshcopia\nCopyright (c) 2026 Xenoah\nCC BY 4.0: https://creativecommons.org/licenses/by/4.0/\nSource: https://xenoah.github.io/meshcopia/assets/city-handheld-angle-grinder/\nProvided as-is, without warranties (license Section 5).\nChanges: none.\nAdditional changes: Converted unchanged source GLB geometry to FBX, with documented compatible material/texture derivatives.\n"
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}