{
  "opening": "The shower thread's reports are PLA parts the posters say are still in use, including a soap dish from about 2016 and a PLA tub screen for about a year and a half. That is not a waterproof rating. PETG and ASA list higher heat resistance in the catalog.",
  "question": "What filament is best for bathroom/shower parts?",
  "slug": "shower",
  "useCase": "watertight",
  "useCaseLabel": "Watertight",
  "updated": "2026-10-20",
  "shortAnswer": "The shower thread's reports are PLA parts the posters say are still in use, including a soap dish from about 2016 and a PLA tub screen for about a year and a half. That is not a waterproof rating. PETG and ASA list higher heat resistance in the catalog.",
  "recommendedMaterials": [
    "pla",
    "petg",
    "asa"
  ],
  "printerConsiderations": [
    "Clean the part. The score-20 reply on r/BambuLab 1bb49vl says a Polyterra tray is more likely to grow mold or hold soap scum than to melt, and says to clean it. Mold resistance is not a number on these datasheets.",
    "A closed bathroom is humid air around the spool as well as water on the part. r/FixMyPrint ugv0ur is storage, and the replies name zip bags, cereal boxes, and tubs of desiccant.",
    "r/BambuLab 1vcujin is a SUNLU AMS heater whose hygrometer went from 10% to 31% relative humidity, which Bambu Studio graded D. The replies say the vent was closed, so the moisture had nowhere to go. Those percentages are the post's meter."
  ],
  "pros": [
    "The PLA lifespan lines stay attached to the shower replies that stated them.",
    "PETG and ASA bring listed nozzle and bed ranges for someone who wants a higher catalog heat rating than PLA."
  ],
  "cons": [
    "No datasheet in this set states a bathroom lifespan or a waterproof grade.",
    "Four of the five threads are storage, an extruder wobble, a dryer vent, and heat creep. They are not shower tests."
  ],
  "community": "r/BambuLab 1bb49vl asks how PLA will hold up as a soap dish in a child's shower. A score-60 reply has a PLA hair screen in a tub drain for about a year and a half and says it is fine. A score-31 reply has used a soap dish printed around 2016 and says it is still in the bathroom. A score-20 reply has Polyterra white trays, says they have not melted, and says to clean them because mold or soap residue is the likelier problem. A score-10 reply printed the same dish in Polyterra PLA and says more than a year of very hot showers has not melted it. r/FixMyPrint ugv0ur asks for cheap storage for opened spools. Replies name zip bags, a filament dryer, cereal containers, and airtight tubs with desiccant. r/FixMyPrint una950 asks if a repeating under-extrusion pattern is humid filament. The top comment is a joke about the shape. The score-33 reply says the extruder gear is off center or wobbling. r/BambuLab 1vcujin installed a SUNLU AMS heater and watched a hygrometer rise from 10% to 31% relative humidity, graded D in Bambu Studio. Replies say to open the vent so wet air can leave. r/FixMyPrint xbs0hy asks if a print that goes bad after 6 hours in a dryer is humidity. The score-42 reply says it is heat creep. The poster later moved the printer out of a tent and says the print recovered.",
  "related": [
    "waterproof",
    "outdoor",
    "petg_print"
  ],
  "faq": [
    {
      "q": "Do the shower replies say PLA failed?",
      "a": "They say the opposite. A PLA drain screen is reported fine after about a year and a half, a soap dish from about 2016 is still in use, and two replies say Polyterra PLA trays have not melted. Polyterra is not in this catalog. None of those replies is a waterproof rating."
    },
    {
      "q": "Why rank PETG and ASA as well?",
      "a": "They are the catalog materials with higher listed nozzle and bed temperatures than PLA Basic. PolyLite PETG lists 220–250 °C (428–482 °F) and 70–90 °C (158–194 °F). SUNLU PETG lists 240–260 °C (464–500 °F) and 60–70 °C (140–158 °F). Bambu ASA lists 235–260 °C (455–500 °F) and 90–110 °C (194–230 °F). The shower thread does not test those spools."
    }
  ],
  "sources": [
    {
      "title": "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": "Bambu ASA technical data sheet",
      "url": "https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_ASA_Technical_Data_Sheet.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": "SUNLU PETG product page",
      "url": "https://www.sunlu.com/products/petg-3d-printing-filament",
      "kind": "manufacturer"
    },
    {
      "title": "SUNLU filament wiki",
      "url": "https://www.sunlu.com/wiki/61",
      "kind": "manufacturer"
    },
    {
      "title": "Community source, r/BambuLab 1bb49vl",
      "url": "https://www.reddit.com/r/BambuLab/comments/1bb49vl/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint ugv0ur",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/ugv0ur/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint una950",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/una950/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 1vcujin",
      "url": "https://www.reddit.com/r/BambuLab/comments/1vcujin/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint xbs0hy",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/xbs0hy/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "PolyLite PETG technical data sheet. Nozzle 220–250 °C (428–482 °F), bed 70–90 °C (158–194 °F), drying at 65 °C (149 °F) for 6 h. Ranked as a higher-heat catalog PETG, not as a spool the shower thread tested.",
      "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": 2,
      "note": "SUNLU PETG lists 240–260 °C (464–500 °F) and a bed of 60–70 °C (140–158 °F), checked 19 October 2026, and drying at 60–65 °C (140–149 °F) for 6–8 h. The SUNLU thread in this bank is a dryer vent reading, not a shower part.",
      "brand": "SUNLU",
      "product": "PETG",
      "material": "PETG",
      "url": "/brand/sunlu/petg",
      "nozzle": "240–260 °C (464–500 °F)",
      "bed": "60–70 °C (140–158 °F)",
      "pricePerKg": null,
      "datasheetUrl": null,
      "affiliateUrl": null
    },
    {
      "rank": 3,
      "note": "Bambu ASA technical data sheet. Nozzle 235–260 °C (455–500 °F), bed 90–110 °C (194–230 °F), drying at 80 °C (176 °F) for 8 h. The outdoor guide's sun-facing material. The shower thread does not print ASA. The bed top is above the A1 maximum of 100 °C (212 °F).",
      "brand": "Bambu Lab",
      "product": "ASA",
      "material": "ASA",
      "url": "/brand/bambu-lab/asa",
      "nozzle": "235–260 °C (455–500 °F)",
      "bed": "90–110 °C (194–230 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_ASA_Technical_Data_Sheet.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 4,
      "note": "PLA Basic lists 190–230 °C (374–446 °F), a bed of 35–45 °C (95–113 °F), and drying at 50 °C (122 °F) for 8 h. The shower replies name PLA and Polyterra PLA. Polyterra is not a catalog id. This row is a PLA sheet, not a claim that those soap dishes used PLA Basic.",
      "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
    }
  ]
}