{
  "version": "2026-10-31",
  "basis": "Typical processing guidance for FFF. Confirm against the filament supplier's datasheet before qualifying parts.",
  "statuses": {
    "qualified": "Open or validated system: nozzle reaches nozzleMinC and the active chamber reaches chamberRecommendedC. Closed system: the material is in the vendor's own catalog.",
    "marginal": "Nozzle reaches nozzleMinC but the active chamber is below chamberRecommendedC. Expect more warping and weaker layer bonding on large parts.",
    "nozzle_too_cold": "Maximum nozzle temperature is below nozzleMinC.",
    "not_in_vendor_catalog": "Closed system whose vendor does not sell this material."
  },
  "materials": [
    {
      "key": "asa",
      "name": "ASA / ABS",
      "short": "ASA",
      "nozzleMinC": 250,
      "chamberRecommendedC": 45,
      "summary": "Styrenic engineering plastics for housings, jigs and outdoor parts. ASA adds UV resistance. Both warp and crack without a warm enclosure."
    },
    {
      "key": "pc",
      "name": "Polycarbonate (PC)",
      "short": "PC",
      "nozzleMinC": 270,
      "chamberRecommendedC": 60,
      "summary": "Tough, transparent-capable polymer with heat resistance around 110 °C. Strong shrinkage makes chamber heat important on parts larger than a fist."
    },
    {
      "key": "pacf",
      "name": "Nylon CF (PA-CF)",
      "short": "PA-CF",
      "nozzleMinC": 280,
      "chamberRecommendedC": 50,
      "note": "Abrasive: needs a hardened nozzle.",
      "summary": "Chopped-carbon nylon for stiff, light fixtures and end-use brackets. Absorbs moisture, so it needs dry storage, and wears brass nozzles quickly."
    },
    {
      "key": "ppscf",
      "name": "PPS-CF",
      "short": "PPS-CF",
      "nozzleMinC": 320,
      "chamberRecommendedC": 90,
      "note": "Abrasive: needs a hardened nozzle.",
      "summary": "Carbon-filled polyphenylene sulfide with strong chemical and fuel resistance, used in automotive and chemical-processing parts."
    },
    {
      "key": "ultem",
      "name": "ULTEM 9085 (PEI)",
      "short": "PEI 9085",
      "nozzleMinC": 360,
      "chamberRecommendedC": 90,
      "summary": "Flame-retardant polyetherimide with aerospace interior certifications (FST). Needs high nozzle and chamber heat to bond layers."
    },
    {
      "key": "pekk",
      "name": "PEKK",
      "short": "PEKK",
      "nozzleMinC": 360,
      "chamberRecommendedC": 90,
      "summary": "Polyetherketoneketone for aerospace and space hardware: high strength at temperature with low outgassing. Slower to crystallise than PEEK, which makes it easier to print."
    },
    {
      "key": "peek",
      "name": "PEEK",
      "short": "PEEK",
      "nozzleMinC": 400,
      "chamberRecommendedC": 100,
      "note": "Crystallinity depends on chamber heat and annealing.",
      "summary": "Semi-crystalline polyetheretherketone for parts that must keep strength above 200 °C and resist chemicals, sterilisation and wear. The hardest common FFF polymer to print well."
    }
  ]
}