{
  "project_name": "Filament Drybox Cost Model",
  "source_model": "Filament Storage 2026 by GunplaMark",
  "source_url": "https://www.printables.com/",
  "currency": "USD",
  "components": [
    {
      "id": "container",
      "name": "4L cereal container",
      "category": "hardware",
      "unit_type": "each",
      "pack_qty": 4,
      "pack_cost": 39.99,
      "units_used_per_box": 1,
      "optional": false,
      "notes": "Praki, Wildone, or Skroam style 4L container"
    },
    {
      "id": "bearing",
      "name": "608 bearing",
      "category": "hardware",
      "unit_type": "each",
      "pack_qty": 10,
      "pack_cost": 11.99,
      "units_used_per_box": 4,
      "optional": false,
      "notes": "Open, ungreased fidget-spinner style bearings"
    },
    {
      "id": "badge_reel",
      "name": "badge reel",
      "category": "hardware",
      "unit_type": "each",
      "pack_qty": 10,
      "pack_cost": 14.99,
      "units_used_per_box": 1,
      "optional": false,
      "notes": "Used to harvest spring"
    },
    {
      "id": "foam_cord",
      "name": "3mm silicone foam cord",
      "category": "consumable",
      "unit_type": "meter",
      "pack_qty": 10,
      "pack_cost": 9.99,
      "units_used_per_box": 0.70,
      "optional": false,
      "notes": "Length per box is an estimate; measure actual lid circumference"
    },
    {
      "id": "desiccant",
      "name": "activated alumina desiccant",
      "category": "consumable",
      "unit_type": "gram",
      "pack_qty": 2000,
      "pack_cost": 24.99,
      "units_used_per_box": 150,
      "optional": false,
      "notes": "Silica gel could be modeled as an alternative later"
    },
    {
      "id": "hygrometer",
      "name": "rectangular hygrometer",
      "category": "hardware",
      "unit_type": "each",
      "pack_qty": 4,
      "pack_cost": 17.99,
      "units_used_per_box": 1,
      "optional": false,
      "notes": "Common small rectangular hygrometer"
    },
    {
      "id": "nfc_tag",
      "name": "25mm NFC tag",
      "category": "optional",
      "unit_type": "each",
      "pack_qty": 20,
      "pack_cost": 9.99,
      "units_used_per_box": 1,
      "optional": true,
      "notes": "Optional spool identification tag"
    }
  ]
}