{
  "opening": "PETG bonds hard enough to damage smooth PEI, and it also lets go when the sheet is greasy, the nozzle is too high, or the part is cooling in a draft. Prusa says use a powder-coated sheet, and use glue on smooth PEI as a release layer. Bambu says glue on textured PEI can reduce PETG's grip so the part will come off.",
  "question": "Why does PETG stick too well (or not at all) to my bed?",
  "slug": "bed_adhesion_petg",
  "useCase": "troubleshooting",
  "useCaseLabel": "Troubleshooting",
  "updated": "2026-10-19",
  "shortAnswer": "PETG bonds hard enough to damage smooth PEI, and it also lets go when the sheet is greasy, the nozzle is too high, or the part is cooling in a draft. Prusa says use a powder-coated sheet, and use glue on smooth PEI as a release layer. Bambu says glue on textured PEI can reduce PETG's grip so the part will come off.",
  "recommendedMaterials": [
    "petg"
  ],
  "printerConsiderations": [
    "Prusa's warping article says bed adhesion might be too high with PETG or PC and might result in a damaged PEI surface. It also says a thin glue stick on a cold sheet can be a separation layer.",
    "Bambu's glue guide says the discontinued Cool Plate is only suitable for PLA, and that PETG or ABS on it may bulge and stick. Cool Plate SuperTack is the plate they say needs no glue.",
    "A score-10 comment on r/FixMyPrint 117fwds says that person never cools PETG. Prusa says the opposite for detail: cool the part, and turn the fan off only when toughness matters. Those are two different goals."
  ],
  "pros": [
    "Both Prusa and Bambu publish a release-agent step for PETG on the plate it bonds to.",
    "The catalog bed ranges sit next to the plate advice instead of replacing it."
  ],
  "cons": [
    "The highest-scored comment in this set is about top layers, not adhesion.",
    "No supplied comment states a Z-offset number. This page does not add one."
  ],
  "community": "r/FixMyPrint 12xa9z5 is a rough PETG top. The score-72 comment says the infill is showing through and the part needs more top layers. r/FixMyPrint 117fwds is a PETG warp at the temperatures in the title, 240 °C (464 °F) and a 70 °C (158 °F) bed. The score-12 comment says the part is cooling unevenly and names drafts. The score-10 comment says that person never uses part cooling with PETG. r/BambuLab 11oor5u is the Cool Plate question in the bank title. No excerpt was supplied for r/FixMyPrint 10339n7 or r/ender3 1033yjm, so this page does not quote them. The bank title on 1033yjm is a PETG adhesion failure at 230 °C (446 °F) and 75 °C (167 °F) with hairspray.",
  "related": [
    "bed_adhesion",
    "plate",
    "petg_print",
    "warping",
    "drying"
  ],
  "faq": [
    {
      "q": "Is textured PEI enough by itself?",
      "a": "Bambu says textured PEI generally needs no glue, and then says PETG can still bond so strongly that the model is hard to remove. Glue on that plate is there to reduce adhesion. Prusa's recommendation for their own sheets is powder-coated TXT or satin, not smooth PEI."
    },
    {
      "q": "Should the fan be off because one comment never cools PETG?",
      "a": "That comment is one person's warp fix. Prusa says cooling keeps PETG detailed and reduces stringing, and that the fan comes off when you want the toughest layer bond. Pick the failure you actually have."
    }
  ],
  "sources": [
    {
      "title": "Prusa Knowledge Base, PETG",
      "url": "https://help.prusa3d.com/article/petg_2059",
      "kind": "manufacturer"
    },
    {
      "title": "Prusa Knowledge Base, warping",
      "url": "https://help.prusa3d.com/article/warping_2011",
      "kind": "manufacturer"
    },
    {
      "title": "Bambu Lab, how to use liquid glue",
      "url": "https://wiki.bambulab.com/en/general/how-to-use-bbl-liquid-glue",
      "kind": "manufacturer"
    },
    {
      "title": "Prusament PETG technical data sheet",
      "url": "https://www.prusa3d.com/file/3464616/prusament-petg-technical-data-sheet.pdf",
      "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": "Open Filament Database, Creality PETG",
      "url": "https://api.openfilamentdatabase.org/api/v1/brands/creality/materials/PETG/filaments/petg/index.json",
      "kind": "other"
    },
    {
      "title": "Community source, r/FixMyPrint 12xa9z5",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/12xa9z5/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint 117fwds",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/117fwds/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint 10339n7",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/10339n7/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 11oor5u",
      "url": "https://www.reddit.com/r/BambuLab/comments/11oor5u/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/ender3 1033yjm",
      "url": "https://www.reddit.com/r/ender3/comments/1033yjm/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "Catalog nozzle 240–260 °C (464–500 °F) and bed 70–90 °C (158–194 °F). Prusa's PETG article uses 230 °C (446 °F) then 240 °C (464 °F) and a bed of 85 °C (185 °F) then 90 °C (194 °F), and says not to print PETG on smooth PEI because the adhesion may be too strong.",
      "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": "PolyLite PETG lists a nozzle of 220–250 °C (428–482 °F) and a bed of 70–90 °C (158–194 °F). The plate choice is not on the row. Drying on this row is 65 °C (149 °F) for 6 hours.",
      "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
    },
    {
      "rank": 3,
      "note": "Creality PETG lists a nozzle of 220–250 °C (428–482 °F) and a bed of 70–90 °C (158–194 °F). A title in this bank used 230 °C (446 °F) and 75 °C (167 °F) with hairspray. That pair is the post, not this row.",
      "brand": "Creality",
      "product": "PETG",
      "material": "PETG",
      "url": "/brand/creality/petg",
      "nozzle": "220–250 °C (428–482 °F)",
      "bed": "70–90 °C (158–194 °F)",
      "pricePerKg": null,
      "datasheetUrl": null,
      "affiliateUrl": null
    }
  ]
}