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Fibre, metal, wood and glow fillers, and most of them eat brass nozzles

The best speciality filaments for 2026

Speciality filaments add something to a base plastic — carbon or glass fibre for stiffness, wood or metal powder for looks, glow pigment, or a polymer such as nylon or polycarbonate for strength. The base polymer is what decides how the filament prints, and a "carbon fibre" spool can be PLA, PETG or nylon underneath; the listing should say which. The filler type and, on careful listings, its proportion describe what was added. The nozzle requirement is the part most often missed: abrasive fillers — fibres, metal, glow pigments — wear a brass nozzle quickly, and a hardened steel or ruby-tipped nozzle is the maker's usual instruction. Recommended temperatures follow the base polymer, and engineering polymers need a hotend and enclosure that reach them. Drying advice matters most for nylon, which absorbs moisture fast. Net weight is often lower per spool on these filaments, so price comparisons need it. Then the finish — matte, metallic, wood-grain — which is usually why the spool was bought. We compare base polymer, filler, nozzle requirement, recommended temperatures, drying advice, net weight and finish.

The parts and materials worth a place on the bench

  1. GEEETECH silk gold PLA filament spool

    GEEETECH Silk PLA 1.75 mm ±0.03 mm, gold, 1 kg, about 330 m

    A 1 kg spool of gold silk PLA from GEEETECH in 1.75 mm ±0.03 mm, about 330 metres long, with a smooth silky finish that the listing says hides layer lines, vacuum-packed with desiccant.

    Base polymer
    PLA, title
    Filler
    Absent from the listing — a silk finish is described, not a filler
    Nozzle requirement
    Absent from the listing
    Recommended temperatures
    Absent from the listing
    Drying advice
    Absent from the listing as advice — vacuum-packed with desiccant, third bullet
    Net weight
    1 kg, about 330 m of filament, fourth bullet
    Finish
    Silk: very smooth, hiding lines and imperfections, gold, first bullet and title
    Amazon reference
    B07R4M6FMQ (same reference on 6 Amazon marketplaces)
    EAN
    6974994170589
    • A published length, about 330 m on the spool
    • A silk finish that hides layer lines, for vases and decorative prints
    • No temperatures

    Best for: Vases, figures and gifts where a shiny gold surface matters more than strength.

    ≈ £14 / 16 €
    Check price on Amazon
  2. Creality wood-texture PLA filament spool

    Creality Wood-texture PLA 1.75 mm ±0.02 mm, 1 kg

    A 1 kg spool of Creality PLA with a natural wood look and feel in 1.75 mm ±0.02 mm, printed at 190–230 °C and 40–90 mm/s, whose finish is called matte in the title and silky in the first bullet.

    Base polymer
    PLA, title and fourth bullet
    Filler
    Absent from the listing — a natural wood look and feel is described, without naming wood particles, first bullet
    Nozzle requirement
    Absent from the listing
    Recommended temperatures
    190–230 °C at 40–90 mm/s, third bullet
    Drying advice
    Absent from the listing
    Net weight
    1 kg, title
    Finish
    Matte in the title; smooth and silky in the first bullet
    Amazon reference
    B0BZCW8L7J (same reference on 6 Amazon marketplaces)
    EAN
    0198549100852
    • A published temperature and speed range
    • A ±0.02 mm tolerance
    • The finish is called matte in the title and silky in the bullet

    Best for: Decorative models and product mock-ups that should look like wood.

    ≈ £23 / 19 €
    Check price on Amazon
  3. eSUN ePLA-CF carbon fibre filled black filament spool

    eSUN PLA-CF carbon fibre filled 1.75 mm, black, 1 kg

    A 1 kg spool of black eSUN ePLA-CF: PLA with chopped carbon fibre for higher strength and flexural modulus and a matte finish, named as compatible with fast printers including the AnkerMake M5, with no nozzle guidance.

    Base polymer
    PLA, first bullet
    Filler
    Chopped carbon fibre, organically infiltrated, first bullet
    Nozzle requirement
    Absent from the listing
    Recommended temperatures
    Absent from the listing
    Drying advice
    Absent from the listing — lower water absorption than eSUN ePA-CF is stated, fourth bullet
    Net weight
    1 kg, title
    Finish
    Matte carbon fibre texture with less visible layering, second bullet
    Amazon reference
    B0CH36F58Y (same reference on 6 Amazon marketplaces)
    EAN
    0840249104332
    • Carbon fibre filler for higher strength and flexural modulus, as stated
    • A matte finish that makes layer lines less visible
    • No mention of whether a hardened nozzle is needed

    Best for: Stiff jigs, brackets and drone parts on a fast printer, once the nozzle is confirmed suitable.

    ≈ £20 / 17 €
    Check price on Amazon
  4. ERYONE PETG carbon fibre black filament spool

    ERYONE PETG carbon fibre 1.75 mm, black, 1 kg

    A 1 kg spool of black ERYONE PETG with carbon fibre, printed at 240–260 °C on a 100 °C bed, dried for 24 hours before vacuum packing and advised to be kept in resealable foil once opened.

    Base polymer
    PETG, title and first bullet
    Filler
    Carbon fibre, first bullet
    Nozzle requirement
    Absent from the listing
    Recommended temperatures
    Nozzle 240–260 °C, bed 100 °C, third bullet; the spool label in the product photograph reads 230–250 °C nozzle and 75–85 °C bed
    Drying advice
    Dried 24 hours before vacuum packing; store in resealable foil bags after opening, fifth bullet
    Net weight
    1 kg, title and second bullet
    Finish
    Absent from the listing
    Amazon reference
    B0D6G98F3K (same reference on 6 Amazon marketplaces)
    EAN
    0810168132280
    • Nozzle and bed temperatures published
    • Drying before packing and storage advice after opening
    • Two tolerances: ±0.03 mm in the title, ±0.02 mm in the bullet

    Best for: Stiff functional parts in PETG on a printer already fitted with a suitable nozzle.

    ≈ $25 / £21 / 23 €
    Check price on Amazon
  5. Flashforge PETG-CF black filament spool

    Flashforge PETG carbon fibre 1.75 mm ±0.02 mm, black, 1 kg

    A 1 kg spool of black Flashforge PETG-CF in 1.75 mm ±0.02 mm, reinforced with carbon fibre for strength and heat resistance, dried for 24 hours and vacuum-sealed, whose later bullets describe PLA.

    Base polymer
    PETG, title and first bullet
    Filler
    Carbon fibre reinforcement, first bullet
    Nozzle requirement
    Absent from the listing
    Recommended temperatures
    Absent from the listing
    Drying advice
    Absent from the listing as advice — dried 24 hours before packing, vacuum-sealed with desiccant, second bullet
    Net weight
    1 kg, title
    Finish
    Absent from the listing
    Amazon reference
    B0CNYX58SV (same reference on 6 Amazon marketplaces)
    EAN
    6937120306856
    • Carbon fibre reinforcement for strength and temperature resistance, keeping PETG’s impact resistance, as stated
    • A ±0.02 mm tolerance in the title
    • The second, third and fourth bullets describe PLA

    Best for: Stiffer PETG parts for a Flashforge owner who will set temperatures from the maker’s profile.

    ≈ $26 / 26 €
    Check price on Amazon

A price quoted in the text of a MakerVerdict page dates from the day that page was written; the live figure beside each product is fetched while you read and replaces it.