{
  "opening": "Use PETG for hooks, brackets, and clamps that stay under about 80 °C (176 °F), and ASA when the part also needs the higher heat and UV resistance Prusa lists. Plain PLA is the wrong default: Prusa says it is not suitable for technical use and that it softens above 60 °C (140 °F).",
  "question": "What filament should I use for hooks, brackets and load-bearing parts?",
  "slug": "functional_hooks",
  "useCase": "strength",
  "useCaseLabel": "Strength",
  "updated": "2026-10-19",
  "shortAnswer": "Use PETG for hooks, brackets, and clamps that stay under about 80 °C (176 °F), and ASA when the part also needs the higher heat and UV resistance Prusa lists. Plain PLA is the wrong default: Prusa says it is not suitable for technical use and that it softens above 60 °C (140 °F).",
  "recommendedMaterials": [
    "petg",
    "asa",
    "pla"
  ],
  "printerConsiderations": [
    "Prusa's ASA article says an enclosure is necessary for large parts, and that a draft while you ventilate the room hurts the print. The fume warning is on the fumes page.",
    "Prusa's PETG article says more perimeters make a more solid part, and that the fan can come off when the part has to be as tough as possible. Those are process notes, not a strength rating.",
    "The catalog has no load rating for a printed hook. A bottle holder in r/3Dprinting 1afdylq is a PLA creep photo, not a test method."
  ],
  "pros": [
    "PETG is the material Prusa uses for printer parts and names for holders and clamps.",
    "ASA is the step up when the part sees sun or heat past PETG's below-80 °C (176 °F) outdoor note."
  ],
  "cons": [
    "The five supplied threads do not compare hook plastics. One score-2 comment guesses a day or two for regular PLA.",
    "ASA's catalog nozzle starts at 250 °C (482 °F), and the article warns about styrene fumes."
  ],
  "community": "r/3Dprinting 1afdylq asks how long PLA will take to sag under a bottle. The score-2 comment says a day or two, assuming regular PLA and a couple of perimeters, and says it could be better with strength settings and the type of PLA. That is a guess, not a measured creep time. r/3Dprinting skq3dn is spongy extrusion, not a bracket. r/functionalprint 1k40i3y shows a headphone hook printed in Fiberon PETG-rCF. The score-24 comment asks how the design differs from other holders. It does not pick a filament. No excerpt was supplied for r/BambuLab 1czxpkp or r/FixMyPrint 1dz9tey, so this page does not quote them. The bank titles around those links are PLA waste and stringing.",
  "related": [
    "strength",
    "heat",
    "petg_print",
    "pla_print",
    "abs_fumes"
  ],
  "faq": [
    {
      "q": "Does the score-2 comment prove PLA fails in a day?",
      "a": "No. It assumes regular PLA and a couple of perimeters, and it does not name a load or a temperature. Prusa's own line is the usable one: PLA softens and deforms over 60 °C (140 °F) and is not for technical use."
    },
    {
      "q": "Should a hook be PETG-CF because one photo used Fiberon PETG-rCF?",
      "a": "That print is one design photo. The comment under it asks about the model, not the fiber. Carbon-fiber grades are on the carbon-fiber page, and they need a hardened nozzle."
    }
  ],
  "sources": [
    {
      "title": "Prusa Knowledge Base, PLA",
      "url": "https://help.prusa3d.com/article/pla_2062",
      "kind": "manufacturer"
    },
    {
      "title": "Prusa Knowledge Base, PETG",
      "url": "https://help.prusa3d.com/article/petg_2059",
      "kind": "manufacturer"
    },
    {
      "title": "Prusa Knowledge Base, ASA",
      "url": "https://help.prusa3d.com/article/asa_1809",
      "kind": "manufacturer"
    },
    {
      "title": "Prusament PETG technical data sheet",
      "url": "https://www.prusa3d.com/file/3464616/prusament-petg-technical-data-sheet.pdf",
      "kind": "datasheet"
    },
    {
      "title": "Open Filament Database, Prusament ASA",
      "url": "https://api.openfilamentdatabase.org/api/v1/brands/prusament/materials/ASA/filaments/asa/index.json",
      "kind": "other"
    },
    {
      "title": "Open Filament Database, Prusament PLA",
      "url": "https://api.openfilamentdatabase.org/api/v1/brands/prusament/materials/PLA/filaments/pla/index.json",
      "kind": "other"
    },
    {
      "title": "Community source, r/3Dprinting 1afdylq",
      "url": "https://www.reddit.com/r/3Dprinting/comments/1afdylq/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/3Dprinting skq3dn",
      "url": "https://www.reddit.com/r/3Dprinting/comments/skq3dn/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/functionalprint 1k40i3y",
      "url": "https://www.reddit.com/r/functionalprint/comments/1k40i3y/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 1czxpkp",
      "url": "https://www.reddit.com/r/BambuLab/comments/1czxpkp/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint 1dz9tey",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/1dz9tey/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "The catalog row lists a nozzle of 240–260 °C (464–500 °F) and a bed of 70–90 °C (158–194 °F). Prusa's PETG article, a different document, recommends 230 °C (446 °F) on the first layer and 240 °C (464 °F) after that, with a bed of 85 °C (185 °F) then 90 °C (194 °F), and names holders and clamps as the use.",
      "brand": "Prusament",
      "product": "PETG",
      "material": "PETG",
      "url": "/brand/prusament/petg",
      "nozzle": "240–260 °C (464–500 °F)",
      "bed": "70–90 °C (158–194 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://www.prusa3d.com/file/3464616/prusament-petg-technical-data-sheet.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 2,
      "note": "The Open Filament Database row lists a nozzle of 250–270 °C (482–518 °F) and a bed of 100–120 °C (212–248 °F). Prusa's ASA article recommends 260 °C (500 °F) and a bed of 105 °C (221 °F) then 110 °C (230 °F), and lists temperature resistance up to 93 °C (199 °F). Large ASA parts want an enclosure, and the article says the material releases styrene fumes.",
      "brand": "Prusament",
      "product": "ASA",
      "material": "ASA",
      "url": "/brand/prusament/asa",
      "nozzle": "250–270 °C (482–518 °F)",
      "bed": "100–120 °C (212–248 °F)",
      "pricePerKg": null,
      "datasheetUrl": null,
      "affiliateUrl": null
    },
    {
      "rank": 3,
      "note": "Listed so the temperature is on a row, not as the hook plastic. The catalog lists 205–225 °C (401–437 °F) and a bed of 40–60 °C (104–140 °F). Prusa's PLA article uses a different profile, 215 °C (419 °F) then 210 °C (410 °F) and a 60 °C (140 °F) bed, and says PLA is not for technical or outdoor use.",
      "brand": "Prusament",
      "product": "PLA",
      "material": "PLA",
      "url": "/brand/prusament/pla",
      "nozzle": "205–225 °C (401–437 °F)",
      "bed": "40–60 °C (104–140 °F)",
      "pricePerKg": null,
      "datasheetUrl": null,
      "affiliateUrl": null
    }
  ]
}