{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "nut-weighted-flywheels",
 "name": "Nut-weighted flywheels: Ø100–200 with hex pockets for M8, M10, M12, 3/8 and 1/2 in nuts",
 "kind": "hardware",
 "category": "Stirling engines",
 "group": "Drives & mechanisms",
 "year": null,
 "question": "How do I make a 3D-printed flywheel heavy enough for a Stirling engine?",
 "tags": [
  "flywheel",
  "stirling",
  "nut",
  "counterweight",
  "inertia",
  "long earth society"
 ],
 "aliases": [
  "flywheel with nut pockets",
  "weighted flywheel stl",
  "3d printed flywheel add weight",
  "stirling engine flywheel",
  "flywheel hex nut weights",
  "heavy flywheel 3d print"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 24,
 "url": "https://xemstudio.com/objects/nut-weighted-flywheels/",
 "sheet_txt": "https://xemstudio.com/objects/nut-weighted-flywheels/sheet.txt",
 "sheet": {
  "basis": "Hex nut envelopes from ISO 4032 (M8 13 × 6.8, M10 16 × 8.4, M12 18 × 10.8) and ASME B18.2.2 finished hex (3/8 in 9/16 × 21/64, 1/2 in 3/4 × 7/16 in); pockets drawn at the nut's nominal across-corners (press fit; nut masses computed from the hex envelope in steel, weigh yours",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A printed flywheel is too light to carry a Stirling through its cycle; Each wheel has a ring of hex pockets with one flat facing outward, so every nut sits the same way, flush with the face, and the rim holds it against centrifugal load.",
   "Pockets come in multiples of six, so you can fill all of them (maximum inertia, balanced), every other one (half the weight, still balanced), every third, or only one half (a counterweight: the half opposite the crank pin). Press the nuts in; a drop of CA or a strip of tape over the face holds them for good.",
   "Hub: Ø3 (Ø100 and Ø120 only: can engine, LTD and crank-head Ø3 shafts), Ø5 (625 crank stands, rhombic gears, the gamma and alpha crankshafts) or Ø8 (tri-clamp crank frame), with an M3 grub on the shaft's D-flat; no adapter needed.",
   "Sizing: a 2 in tri-clamp gamma on a tea light runs well on Ø150 with a full set of M10 nuts (18 nuts, ~190 g, about +7.6 kg·cm² at the rim); the can engine on Ø100 M8 half-filled; LTDs want the lightest wheel that keeps them turning (start half-filled and add). Print flat, 4 walls, 30 % infill; the nuts are the mass.",
   "LES: the flywheels on the engines."
  ],
  "table": {
   "columns": [
    "od_mm",
    "nut",
    "pockets",
    "pocket_radius_mm",
    "rim_mm",
    "nut_g_each",
    "full_set_g",
    "added_inertia_kg_cm2",
    "bores"
   ],
   "rows": [
    [
     100,
     "M8",
     12,
     40.5,
     8.3,
     5.6,
     67,
     1.1,
     "3 / 5 / 8"
    ],
    [
     120,
     "M10",
     12,
     49,
     9.9,
     10.3,
     124,
     3,
     "3 / 5 / 8"
    ],
    [
     120,
     "3/8 in",
     12,
     49.9,
     9.8,
     7.8,
     93,
     2.3,
     "3 / 5 / 8"
    ],
    [
     150,
     "M10",
     18,
     64,
     9.9,
     10.3,
     186,
     7.6,
     "5 / 8"
    ],
    [
     150,
     "M12",
     12,
     63,
     12.3,
     16,
     192,
     7.6,
     "5 / 8"
    ],
    [
     150,
     "1/2 in",
     12,
     62.5,
     12.6,
     18.5,
     221,
     8.6,
     "5 / 8"
    ],
    [
     200,
     "M12",
     18,
     88,
     12.3,
     16,
     288,
     22.3,
     "5 / 8"
    ],
    [
     200,
     "1/2 in",
     18,
     87.5,
     12.6,
     18.5,
     332,
     25.4,
     "5 / 8"
    ]
   ]
  }
 },
 "sheet_text": "Nut-weighted flywheels: Ø100–200 with hex pockets for M8, M10, M12, 3/8 and 1/2 in nuts — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/nut-weighted-flywheels/  (CC BY 4.0)\nBasis: Hex nut envelopes from ISO 4032 (M8 13 × 6.8, M10 16 × 8.4, M12 18 × 10.8) and ASME B18.2.2 finished hex (3/8 in 9/16 × 21/64, 1/2 in 3/4 × 7/16 in); pockets drawn at the nut's nominal across-corners (press fit; nut masses computed from the hex envelope in steel, weigh yours\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A printed flywheel is too light to carry a Stirling through its cycle; Each wheel has a ring of hex pockets with one flat facing outward, so every nut sits the same way, flush with the face, and the rim holds it against centrifugal load.\n- Pockets come in multiples of six, so you can fill all of them (maximum inertia, balanced), every other one (half the weight, still balanced), every third, or only one half (a counterweight: the half opposite the crank pin). Press the nuts in; a drop of CA or a strip of tape over the face holds them for good.\n- Hub: Ø3 (Ø100 and Ø120 only: can engine, LTD and crank-head Ø3 shafts), Ø5 (625 crank stands, rhombic gears, the gamma and alpha crankshafts) or Ø8 (tri-clamp crank frame), with an M3 grub on the shaft's D-flat; no adapter needed.\n- Sizing: a 2 in tri-clamp gamma on a tea light runs well on Ø150 with a full set of M10 nuts (18 nuts, ~190 g, about +7.6 kg·cm² at the rim); the can engine on Ø100 M8 half-filled; LTDs want the lightest wheel that keeps them turning (start half-filled and add). Print flat, 4 walls, 30 % infill; the nuts are the mass.\n- LES: the flywheels on the engines.\n\nod_mm  nut  pockets  pocket_radius_mm  rim_mm  nut_g_each  full_set_g  added_inertia_kg_cm2  bores\n100  M8  12  40.5  8.3  5.6  67  1.1  3 / 5 / 8\n120  M10  12  49.0  9.9  10.3  124  3.0  3 / 5 / 8\n120  3/8 in  12  49.9  9.8  7.8  93  2.3  3 / 5 / 8\n150  M10  18  64.0  9.9  10.3  186  7.6  5 / 8\n150  M12  12  63.0  12.3  16.0  192  7.6  5 / 8\n150  1/2 in  12  62.5  12.6  18.5  221  8.6  5 / 8\n200  M12  18  88.0  12.3  16.0  288  22.3  5 / 8\n200  1/2 in  18  87.5  12.6  18.5  332  25.4  5 / 8\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- ISO: ISO 4032 Hexagon regular nuts (style 1) — standard — ISO [verify license at link] — https://www.iso.org/standard/72624.html\n- ASME: ASME B18.2.2 Nuts for general applications — standard — ASME [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/b18-2-2-nuts-for-general-applications-machine-screw-nuts-hex-square-hex-flange-coupling-nuts-(inch-series)\n- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 24 parts): https://xemstudio.com/files/hardware/nut-weighted-flywheels/index.json\nAPI: https://xemstudio.com/api/geometry?object=nut-weighted-flywheels\n",
 "sources": [
  {
   "publisher": "ISO",
   "title": "ISO 4032 Hexagon regular nuts (style 1)",
   "url": "https://www.iso.org/standard/72624.html",
   "formats": [
    "standard"
   ],
   "license": "ISO",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "ASME",
   "title": "ASME B18.2.2 Nuts for general applications",
   "url": "https://www.asme.org/codes-standards/find-codes-standards/b18-2-2-nuts-for-general-applications-machine-screw-nuts-hex-square-hex-flange-coupling-nuts-(inch-series)",
   "formats": [
    "standard"
   ],
   "license": "ASME",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Long Earth Society",
   "title": "Engine builds",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "crank-conrod-flywheel-kit",
  "stirling-shafts-and-rods",
  "counterweighted-cranks",
  "hex-nuts-metric",
  "stirling-linkage-fittings",
  "set-screws-metric"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "stirling-shafts-and-rods",
     "why": "Ø3 / Ø5 / Ø8 D-flat shafts"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "stirling-linkage-fittings",
     "why": "gamma crankshaft in the 625 stands"
    },
    {
     "slug": "tri-clamp-power-pistons",
     "why": "crank frame's Ø8 shaft"
    },
    {
     "slug": "rhombic-drive-kit",
     "why": "long Ø5 gear shaft"
    },
    {
     "slug": "alpha-v-twin-frame",
     "why": "behind the boss"
    },
    {
     "slug": "can-engine-printed-kit",
     "why": "Ø3 hub on the skewer"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "crank-conrod-flywheel-kit",
     "why": "plain printed flywheels"
    },
    {
     "slug": "cd-dvd-and-drive-platters",
     "why": "CD flywheel for the can engine"
    }
   ]
  },
  {
   "role": "Also needed",
   "items": [
    {
     "slug": "hex-nuts-metric",
     "why": "steel nuts for the pockets"
    },
    {
     "slug": "set-screws-metric",
     "why": "M3 grub in the hub"
    }
   ]
  }
 ],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [
  {
   "feature": "hub bore",
   "exact": "Ø3 / Ø5 / Ø8",
   "mates": "D-flat crankshaft (M3 grub)",
   "fit": "slide",
   "files": "flywheel-"
  },
  {
   "feature": "rim pockets",
   "exact": "nut across-corners",
   "mates": "hex nut, one flat outward",
   "fit": "press",
   "files": "flywheel-"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "How do I add weight to a 3D-printed flywheel?",
   "a": "Fill all pockets for inertia, alternate pockets for half, or one half only as a counterweight."
  },
  {
   "q": "How heavy should a Stirling flywheel be?",
   "a": "For a 2 in tri-clamp gamma, Ø150 with a full set of 18 M10 nuts adds about 190 g and 7.6 kg·cm² of inertia; start there and remove nuts until it still carries through a cycle. Lighter wheels start faster; heavier ones run smoother."
  },
  {
   "q": "Metric or inch nuts?",
   "a": "Either: the Ø120, Ø150 and Ø200 wheels come in 3/8 in and 1/2 in versions for US hardware-store nuts as well as M10 and M12."
  }
 ],
 "files_license": null,
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  {
   "file": "flywheel-100-m8-b3",
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-100-m8-b3.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-100-m8-b3.stl",
   "note": "Ø100 flywheel, 12 pockets for M8 hex nuts at R40.5 (one flat facing out), Ø3 hub with M3 grub, 8.3 thick rim; full set ≈ 67 g of nuts, +1.1 kg·cm²"
  },
  {
   "file": "flywheel-100-m8-b5",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-100-m8-b5.stl",
   "note": "Ø100 flywheel, 12 pockets for M8 hex nuts at R40.5 (one flat facing out), Ø5 hub with M3 grub, 8.3 thick rim; full set ≈ 67 g of nuts, +1.1 kg·cm²"
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   "file": "flywheel-100-m8-b8",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-100-m8-b8.stl",
   "note": "Ø100 flywheel, 12 pockets for M8 hex nuts at R40.5 (one flat facing out), Ø8 hub with M3 grub, 8.3 thick rim; full set ≈ 67 g of nuts, +1.1 kg·cm²"
  },
  {
   "file": "flywheel-120-m10-b3",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-120-m10-b3.stl",
   "note": "Ø120 flywheel, 12 pockets for M10 hex nuts at R49.0 (one flat facing out), Ø3 hub with M3 grub, 9.9 thick rim; full set ≈ 124 g of nuts, +3.0 kg·cm²"
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-120-m10-b5.stl",
   "note": "Ø120 flywheel, 12 pockets for M10 hex nuts at R49.0 (one flat facing out), Ø5 hub with M3 grub, 9.9 thick rim; full set ≈ 124 g of nuts, +3.0 kg·cm²"
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-120-m10-b8.stl",
   "note": "Ø120 flywheel, 12 pockets for M10 hex nuts at R49.0 (one flat facing out), Ø8 hub with M3 grub, 9.9 thick rim; full set ≈ 124 g of nuts, +3.0 kg·cm²"
  },
  {
   "file": "flywheel-120-3-8in-b3",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-120-3-8in-b3.stl",
   "note": "Ø120 flywheel, 12 pockets for 3/8 in hex nuts at R49.9 (one flat facing out), Ø3 hub with M3 grub, 9.8 thick rim; full set ≈ 93 g of nuts, +2.3 kg·cm²"
  },
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   "file": "flywheel-120-3-8in-b5",
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   "note": "Ø120 flywheel, 12 pockets for 3/8 in hex nuts at R49.9 (one flat facing out), Ø5 hub with M3 grub, 9.8 thick rim; full set ≈ 93 g of nuts, +2.3 kg·cm²"
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   "file": "flywheel-120-3-8in-b8",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-120-3-8in-b8.stl",
   "note": "Ø120 flywheel, 12 pockets for 3/8 in hex nuts at R49.9 (one flat facing out), Ø8 hub with M3 grub, 9.8 thick rim; full set ≈ 93 g of nuts, +2.3 kg·cm²"
  },
  {
   "file": "flywheel-150-m10-b5",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-150-m10-b5.stl",
   "note": "Ø150 flywheel, 18 pockets for M10 hex nuts at R64.0 (one flat facing out), Ø5 hub with M3 grub, 9.9 thick rim; full set ≈ 186 g of nuts, +7.6 kg·cm²"
  },
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   "file": "flywheel-150-m10-b8",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-150-m10-b8.stl",
   "note": "Ø150 flywheel, 18 pockets for M10 hex nuts at R64.0 (one flat facing out), Ø8 hub with M3 grub, 9.9 thick rim; full set ≈ 186 g of nuts, +7.6 kg·cm²"
  },
  {
   "file": "flywheel-150-m12-b5",
   "formats": [
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   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-150-m12-b5.stl",
   "note": "Ø150 flywheel, 12 pockets for M12 hex nuts at R63.0 (one flat facing out), Ø5 hub with M3 grub, 12.3 thick rim; full set ≈ 192 g of nuts, +7.6 kg·cm²"
  },
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   "file": "flywheel-150-m12-b8",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-150-m12-b8.stl",
   "note": "Ø150 flywheel, 12 pockets for M12 hex nuts at R63.0 (one flat facing out), Ø8 hub with M3 grub, 12.3 thick rim; full set ≈ 192 g of nuts, +7.6 kg·cm²"
  },
  {
   "file": "flywheel-150-1-2in-b5",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-150-1-2in-b5.stl",
   "note": "Ø150 flywheel, 12 pockets for 1/2 in hex nuts at R62.5 (one flat facing out), Ø5 hub with M3 grub, 12.6 thick rim; full set ≈ 221 g of nuts, +8.6 kg·cm²"
  },
  {
   "file": "flywheel-150-1-2in-b8",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-150-1-2in-b8.stl",
   "note": "Ø150 flywheel, 12 pockets for 1/2 in hex nuts at R62.5 (one flat facing out), Ø8 hub with M3 grub, 12.6 thick rim; full set ≈ 221 g of nuts, +8.6 kg·cm²"
  },
  {
   "file": "flywheel-200-m12-b5",
   "formats": [
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    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-m12-b5.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-m12-b5.stl",
   "note": "Ø200 flywheel, 18 pockets for M12 hex nuts at R88.0 (one flat facing out), Ø5 hub with M3 grub, 12.3 thick rim; full set ≈ 288 g of nuts, +22.3 kg·cm²"
  },
  {
   "file": "flywheel-200-m12-b8",
   "formats": [
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    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-m12-b8.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-m12-b8.stl",
   "note": "Ø200 flywheel, 18 pockets for M12 hex nuts at R88.0 (one flat facing out), Ø8 hub with M3 grub, 12.3 thick rim; full set ≈ 288 g of nuts, +22.3 kg·cm²"
  },
  {
   "file": "flywheel-200-1-2in-b5",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-1-2in-b5.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-1-2in-b5.stl",
   "note": "Ø200 flywheel, 18 pockets for 1/2 in hex nuts at R87.5 (one flat facing out), Ø5 hub with M3 grub, 12.6 thick rim; full set ≈ 332 g of nuts, +25.4 kg·cm²"
  },
  {
   "file": "flywheel-200-1-2in-b8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-1-2in-b8.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/flywheel-200-1-2in-b8.stl",
   "note": "Ø200 flywheel, 18 pockets for 1/2 in hex nuts at R87.5 (one flat facing out), Ø8 hub with M3 grub, 12.6 thick rim; full set ≈ 332 g of nuts, +25.4 kg·cm²"
  },
  {
   "file": "nut-m8",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-m8.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-m8.stl",
   "note": "M8 hex nut, 13 across flats × 6.8: the flywheel weight"
  },
  {
   "file": "nut-m10",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-m10.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-m10.stl",
   "note": "M10 hex nut, 16 across flats × 8.4: the flywheel weight"
  },
  {
   "file": "nut-m12",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-m12.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-m12.stl",
   "note": "M12 hex nut, 18 across flats × 10.8: the flywheel weight"
  },
  {
   "file": "nut-3-8in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-3-8in.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-3-8in.stl",
   "note": "3/8 in hex nut, 14.29 across flats × 8.33: the flywheel weight"
  },
  {
   "file": "nut-1-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-1-2in.step",
   "stl": "https://xemstudio.com/files/hardware/nut-weighted-flywheels/nut-1-2in.stl",
   "note": "1/2 in hex nut, 19.05 across flats × 11.11: the flywheel weight"
  }
 ],
 "markdown": "https://xemstudio.com/objects/nut-weighted-flywheels/index.md"
}