{
  "opening": "Use brass or stainless steel for plain PLA, PETG, and TPU. Use hardened steel for carbon fiber, glass fiber, and the particle fills Bambu lists, including marble, sparkle, and glow. Bambu's first choice for most of those fills is a 0.6 mm hardened nozzle, and for their own PLA-CF, PETG-CF, marble, sparkle, and glow it is a 0.4 mm hardened nozzle.",
  "question": "Which nozzle (brass, hardened, 0.6mm) should I use for which filament?",
  "slug": "nozzle",
  "useCase": "fiber",
  "useCaseLabel": "Carbon fiber",
  "updated": "2026-10-19",
  "shortAnswer": "Use brass or stainless steel for plain PLA, PETG, and TPU. Use hardened steel for carbon fiber, glass fiber, and the particle fills Bambu lists, including marble, sparkle, and glow. Bambu's first choice for most of those fills is a 0.6 mm hardened nozzle, and for their own PLA-CF, PETG-CF, marble, sparkle, and glow it is a 0.4 mm hardened nozzle.",
  "recommendedMaterials": [
    "pla",
    "petg",
    "tpu"
  ],
  "printerConsiderations": [
    "Bambu's fiber section says always use hardened steel for carbon, glass, and particle fills. First choice is 0.6 mm hardened, because clog risk is lower. Second is 0.4 mm hardened. For Bambu PLA-CF, PETG-CF, marble, sparkle, and glow, 0.4 mm hardened is the first choice instead.",
    "The A1 and A1 mini records say the stock nozzle is 0.4 mm stainless, and that hardened steel is sold separately. A stock A1 is the brass-or-stainless case until you change it.",
    "A score-6 comment says less than 100 g of carbon-fiber filament destroys a brass nozzle. That is the comment. It is not a wear test with a method."
  ],
  "pros": [
    "The nozzle alloy and the diameter both come from one Bambu table, split by filament.",
    "Plain PLA, PETG, and TPU stay on the not-required side of that table."
  ],
  "cons": [
    "The door-knob thread is about a brass screw, not a printer nozzle.",
    "No data sheet here rates ruby against hardened steel. A comment mentions ruby. This page stops there."
  ],
  "community": "r/3Dprinting sivlq6 shows carbon-fiber filament wearing a brass nozzle into a slot. The score-31 comment calls it sandpaper, says they lost brass nozzles before switching to steel, and says steel still wears slowly. They mention ruby-tipped nozzles as the next choice. The score-6 comment says less than 100 g is enough to ruin a common brass nozzle. r/functionalprint 17l23e2 is a printed door knob. The score-94 comment is a link to a 1/4-32 screw. The score-27 comment suggests electroplating instead of a metallic PLA. No excerpt was supplied for r/BambuLab 15jovbt, r/prusa3d 1qexmcd, or r/FixMyPrint vyyu5j. The bank titles there are a TPU nozzle size, swapping hardened steel for stainless on PLA, and PETG stuck to an ObXidian nozzle.",
  "related": [
    "cf",
    "clog",
    "metal_fill",
    "wood",
    "cf_petg"
  ],
  "faq": [
    {
      "q": "Should I leave hardened steel in for PLA?",
      "a": "Bambu does not require it for standard PLA, PETG, or TPU. The bank title on r/prusa3d 1qexmcd asks about swapping back to stainless for PLA. No excerpt was supplied, so this page does not claim a surface-finish difference. The A1's stock nozzle is already 0.4 mm stainless."
    },
    {
      "q": "Is 0.6 mm the strong-parts nozzle?",
      "a": "Bambu's reason for 0.6 mm on fiber fills is lower clog risk, and they say detail drops as the diameter goes from 0.4 to 0.6 to 0.8 mm. They do not call 0.6 mm a strength setting. For their PLA-CF and PETG-CF, 0.4 mm hardened is the first choice."
    }
  ],
  "sources": [
    {
      "title": "Bambu Lab filament guide",
      "url": "https://wiki.bambulab.com/en/general/filament-guide-material-table",
      "kind": "manufacturer"
    },
    {
      "title": "Bambu A1 FAQ",
      "url": "https://wiki.bambulab.com/en/a1/manual/faq",
      "kind": "manufacturer"
    },
    {
      "title": "Bambu PLA-CF technical data sheet",
      "url": "https://cdn.shopify.com/s/files/1/0584/7236/6216/files/Bambu_PLA-CF_Technical_Data_Sheet_V3.pdf",
      "kind": "datasheet"
    },
    {
      "title": "Bambu PLA Basic technical data sheet",
      "url": "https://cdn.shopify.com/s/files/1/0584/7236/6216/files/Bambu_PLA_Basic_Technical_Data_Sheet_bf3411ce-be39-4db7-9669-1b4671d2196b.pdf?v=1734060943",
      "kind": "datasheet"
    },
    {
      "title": "Polymaker PolyLite PETG technical data sheet",
      "url": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PETG_TDS_EN_V5.4.pdf",
      "kind": "datasheet"
    },
    {
      "title": "Community source, r/functionalprint 17l23e2",
      "url": "https://www.reddit.com/r/functionalprint/comments/17l23e2/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/3Dprinting sivlq6",
      "url": "https://www.reddit.com/r/3Dprinting/comments/sivlq6/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 15jovbt",
      "url": "https://www.reddit.com/r/BambuLab/comments/15jovbt/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/prusa3d 1qexmcd",
      "url": "https://www.reddit.com/r/prusa3d/comments/1qexmcd/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint vyyu5j",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/vyyu5j/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "Plain PLA. Nozzle 190–230 °C (374–446 °F), bed 35–45 °C (95–113 °F), hardened flag blank. Bambu's table says a hardened nozzle is not required for standard PLA, and the A1 ships with a 0.4 mm stainless nozzle.",
      "brand": "Bambu Lab",
      "product": "PLA Basic",
      "material": "PLA",
      "url": "/brand/bambu-lab/pla-basic",
      "nozzle": "190–230 °C (374–446 °F)",
      "bed": "35–45 °C (95–113 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0584/7236/6216/files/Bambu_PLA_Basic_Technical_Data_Sheet_bf3411ce-be39-4db7-9669-1b4671d2196b.pdf?v=1734060943",
      "affiliateUrl": null
    },
    {
      "rank": 2,
      "note": "PLA-CF lists 190–230 °C (374–446 °F) and a bed of 50–70 °C (122–158 °F), and the hardened nozzle flag is set. Bambu says a 0.4 mm hardened nozzle is the first choice for Bambu PLA-CF, with 0.2 mm not compatible.",
      "brand": "Bambu Lab",
      "product": "PLA-CF",
      "material": "PLA",
      "url": "/brand/bambu-lab/pla-cf",
      "nozzle": "190–230 °C (374–446 °F)",
      "bed": "50–70 °C (122–158 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0584/7236/6216/files/Bambu_PLA-CF_Technical_Data_Sheet_V3.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 3,
      "note": "Plain PETG, 220–250 °C (428–482 °F) and a bed of 70–90 °C (158–194 °F), hardened flag blank. Bambu marks hardened steel not required for PETG. PETG-CF is the row that flips that flag, on the carbon-fiber page.",
      "brand": "Polymaker",
      "product": "Polylite PETG",
      "material": "PETG",
      "url": "/brand/polymaker/polylite-petg",
      "nozzle": "220–250 °C (428–482 °F)",
      "bed": "70–90 °C (158–194 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0548/7299/7945/files/PolyLite_PETG_TDS_EN_V5.4.pdf",
      "affiliateUrl": null
    }
  ]
}