{
 "slug": "tuba",
 "triangles": 18342,
 "texture_px": 2048,
 "triangles_light": null,
 "texture_px_light": null,
 "files": {
  "glb": {
   "name": "tuba.glb",
   "bytes": 2136320
  },
  "blend": {
   "name": "tuba.blend",
   "bytes": 1436138
  },
  "fbx": {
   "name": "tuba.fbx",
   "bytes": 3776892
  },
  "obj": {
   "name": "tuba-obj.zip",
   "bytes": 1905995
  },
  "usdz": {
   "name": "tuba.usdz",
   "bytes": 3485494
  }
 },
 "extras": {
  "license": "CC0-1.0",
  "source": "grab3d.com",
  "dimensions_m": "0.687 x 0.550 x 1.018",
  "triangles": 18342,
  "textures": "PBR 2048px: base color, roughness, metallic, normal (baked)",
  "generator": "Created by grab3d",
  "created": "2026-09-26",
  "real_size": "B-flat tuba, 97 cm tall on a low stand, bell 42 cm",
  "notes": "upright tuba: large bell, bell branch, bottom bow with guard, main branch, upper bow into four front piston valves with valve slides looping to the back, leadpipe with silver mouthpiece, braces and thumb ring; charcoal tripod stand with a padded bow cradle and padded rest; the four valve pistons are separate objects tuba_piston_1..4 with the origin at the button top, press = move along -Z by up to 16 mm; no text, no logo",
  "set": "Cozy Music Kit"
 },
 "origin": {
  "method": "procedural",
  "detail": "Built procedurally with Blender scripts. The scripts were written with the help of an AI coding assistant. No generative AI model produced the geometry or textures directly.",
  "ai_content": false,
  "ai_assisted_code": true
 }
}