{
  "opening": "Technical data sheet, drying checked 18 October 2026, lists a nozzle of 200–250 °C (392–482 °F), a bed of 30–35 °C (86–95 °F), and drying at 70 °C (158 °F) for 8 h. Pick the hardness the part needs, from a row that publishes it. This catalog stores shore 85 on Bambu TPU 85A and shore 90 on Bambu TPU 90A. Prusament TPU 95A puts 95A in the product name and does not store a separate shore field. Siraya Flex TPU 64D lists Shore 64D on its TDS page. The comments are about drying and speed, not about which grade is easiest.",
  "question": "Which TPU hardness (85A/90A/95A/64D) should I choose?",
  "slug": "tpu_hardness",
  "useCase": "flexible",
  "useCaseLabel": "Flexible",
  "updated": "2026-10-23",
  "shortAnswer": "Pick the hardness the part needs, from a row that publishes it. This catalog stores shore 85 on Bambu TPU 85A and shore 90 on Bambu TPU 90A. Prusament TPU 95A puts 95A in the product name and does not store a separate shore field. Siraya Flex TPU 64D lists Shore 64D on its TDS page. The comments are about drying and speed, not about which grade is easiest.",
  "recommendedMaterials": [
    "tpu"
  ],
  "printerConsiderations": [
    "The score-10 comment says dry TPU in a food dehydrator rather than an oven, because of temperature control and airflow. It does not name 85A, 90A, 95A, or 64D.",
    "The score-8 comment shows one print at 50 mm/s and one at 30 mm/s. Siraya's page lists 30–80 mm/s as its own starting range. Do not merge the comment and the page into one rule.",
    "Kexcelled K8 TPU 64D lists a nozzle of 215–235 °C (419–455 °F) on the product page checked 21 October 2026. The bed and the shore field are empty, so it is not in the table."
  ],
  "pros": [
    "Shore numbers are limited to cells and a page that state them.",
    "95A stays a product name where the catalog has no shore field. The order is the order in the question, not a score."
  ],
  "cons": [
    "No comments says 95A is easier, or that 85A and 90A are harder to print, or that 64D is semi-rigid. These comments do not."
  ],
  "community": "The editorial summary says 95A is easiest, 90A and 85A are more flexible but harder to print, and 64D is semi-rigid. The excerpts do not say that. r/FixMyPrint w0pc5v, score 41, says the print looks like a patch of felt. Score 10 says the filament most likely needs drying, that TPU sucks up moisture, and to use a food dehydrator instead of an oven. The excerpt is cut off. r/FixMyPrint 1kya0df, score 33, says 4 hours is little time for TPU and that people state they dried TPU 10 h. Score 8 is a photo of one print at 50 mm/s and one at 30 mm/s. Those hours and speeds are the comments. No excerpt was supplied for r/BambuLab 1tqxsf7, r/3Dprinting 1va5gnt, or r/prusa3d 1fxaav7.",
  "related": [
    "flex",
    "flexible",
    "tpu_ams",
    "drying"
  ],
  "faq": [
    {
      "q": "Which TPU hardness (85A/90A/95A/64D) should I choose?",
      "a": "Technical data sheet, drying checked 18 October 2026, lists a nozzle of 200–250 °C (392–482 °F), a bed of 30–35 °C (86–95 °F), and drying at 70 °C (158 °F) for 8 h. Pick the hardness the part needs, from a row that publishes it. This catalog stores shore 85 on Bambu TPU 85A and shore 90 on Bambu TPU 90A. Prusament TPU 95A puts 95A in the product name and does not store a separate shore field. Siraya Flex TPU 64D lists Shore 64D on its TDS page. The comments are about drying and speed, not about which grade is easiest."
    },
    {
      "q": "Should I start with 95A because people say it is easiest?",
      "a": "Not from this batch. [Flexible filament](/answers/flex) already records a separate community note that 95A is a common entry point. The comments supplied here talk about drying and about 30 mm/s versus 50 mm/s. Prusament TPU 95A does not store a shore number beside the name."
    },
    {
      "q": "Is 64D the same kind of number as 95A?",
      "a": "No. Siraya's page, read 23 October 2026, lists Shore 64D under ISO 7619 and calls it semi-rigid in the key features. The A grades on the Bambu rows are 85 and 90 in this catalog."
    }
  ],
  "sources": [
    {
      "title": "Bambu Lab TPU 85A technical data sheet",
      "url": "https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_TPU_85A_Technical_Data_Sheet_a7233668-497b-487f-af8a-3adb49fafaa1.pdf?v=1741314674",
      "kind": "datasheet"
    },
    {
      "title": "Bambu Lab TPU 90A technical data sheet",
      "url": "https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_TPU_90A_Technical_Data_Sheet_582bf8f6-1f0a-474c-aeda-9e72af3689dc.pdf",
      "kind": "datasheet"
    },
    {
      "title": "Prusament TPU 95A product page",
      "url": "https://prusament.com/materials/prusament-tpu-95a/",
      "kind": "manufacturer"
    },
    {
      "title": "Siraya Tech Flex TPU 64D TDS page",
      "url": "https://siraya.tech/pages/flex-tpu-64d-filament-tds",
      "kind": "manufacturer"
    },
    {
      "title": "Prusa Knowledge Base, drying filament",
      "url": "https://help.prusa3d.com/article/drying-filament_332086",
      "kind": "manufacturer"
    },
    {
      "title": "Community source, r/FixMyPrint w0pc5v",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/w0pc5v/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/FixMyPrint 1kya0df",
      "url": "https://www.reddit.com/r/FixMyPrint/comments/1kya0df/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/BambuLab 1tqxsf7",
      "url": "https://www.reddit.com/r/BambuLab/comments/1tqxsf7/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/3Dprinting 1va5gnt",
      "url": "https://www.reddit.com/r/3Dprinting/comments/1va5gnt/",
      "kind": "reddit"
    },
    {
      "title": "Community source, r/prusa3d 1fxaav7",
      "url": "https://www.reddit.com/r/prusa3d/comments/1fxaav7/",
      "kind": "reddit"
    }
  ],
  "recommendations": [
    {
      "rank": 1,
      "note": "Technical data sheet, drying checked 18 October 2026, lists a nozzle of 200–250 °C (392–482 °F), a bed of 30–35 °C (86–95 °F), and drying at 70 °C (158 °F) for 8 h. This catalog stores shore 85. The comments do not compare 85A with 95A.",
      "brand": "Bambu Lab",
      "product": "TPU 85A",
      "material": "TPU",
      "url": "/brand/bambu-lab/tpu-85a",
      "nozzle": "200–250 °C (392–482 °F)",
      "bed": "30–35 °C (86–95 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_TPU_85A_Technical_Data_Sheet_a7233668-497b-487f-af8a-3adb49fafaa1.pdf?v=1741314674",
      "affiliateUrl": null
    },
    {
      "rank": 2,
      "note": "Technical data sheet, drying checked 18 October 2026, lists a nozzle of 200–250 °C (392–482 °F), a bed of 30–35 °C (86–95 °F), and drying at 70 °C (158 °F) for 8 h. This catalog stores shore 90.",
      "brand": "Bambu Lab",
      "product": "TPU 90A",
      "material": "TPU",
      "url": "/brand/bambu-lab/tpu-90a",
      "nozzle": "200–250 °C (392–482 °F)",
      "bed": "30–35 °C (86–95 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://cdn.shopify.com/s/files/1/0645/5876/0155/files/Bambu_TPU_90A_Technical_Data_Sheet_582bf8f6-1f0a-474c-aeda-9e72af3689dc.pdf",
      "affiliateUrl": null
    },
    {
      "rank": 3,
      "note": "Open Filament Database nozzle 220–240 °C (428–464 °F) and bed 55–75 °C (131–167 °F), dataset imported 13 October 2026. The product page checked 20 October 2026 does not add a shore field in this catalog. Drying at 60 °C (140 °F) for 6 h is the Prusa material default, not a figure copied from a TPU 95A sheet.",
      "brand": "Prusament",
      "product": "TPU 95A",
      "material": "TPU",
      "url": "/brand/prusament/tpu-95a",
      "nozzle": "220–240 °C (428–464 °F)",
      "bed": "55–75 °C (131–167 °F)",
      "pricePerKg": null,
      "datasheetUrl": null,
      "affiliateUrl": null
    },
    {
      "rank": 4,
      "note": "TDS page read 23 October 2026 lists Shore 64D by ISO 7619, a nozzle of 240–270 °C (464–518 °F), a bed of 45 °C (113 °F), and drying at 50–60 °C (122–140 °F) for at least 4–6 h. This catalog's shore field is empty because it is an A-scale cell. The page also lists a print speed of 30–80 mm/s. That is the page, not the comment.",
      "brand": "Siraya Tech",
      "product": "Flex TPU 64D",
      "material": "TPU",
      "url": "/brand/siraya-tech/flex-tpu-64d",
      "nozzle": "240–270 °C (464–518 °F)",
      "bed": "45 °C (113 °F)",
      "pricePerKg": null,
      "datasheetUrl": "https://siraya.tech/pages/flex-tpu-64d-filament-tds",
      "affiliateUrl": null
    }
  ]
}