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REDREX

Hotend metal and a Titan-style extruder

The REDREX hotend kit

The metal half of a hotend for CR-10 and Ender 3 printers, with an unlined throat and no thermistor or heater cartridge.

The REDREX extruder

A plastic Titan-style Bowden extruder with a guided path for flexible filament and an E-steps value, whose pictured motor is not in the box.

REDREX parts and supplies, each one on the bench

  • Redrex hotend parts: red finned heatsink, gold heater block, steel throat, brass nozzle, push-in fitting and two screws

    REDREX Hotend kit for CR-10 and Ender 3 series, without thermistor or heater

    A Redrex hotend kit for CR-10 and Ender 3 series 3D printers — hotend, nozzle, throat, heater block and a straight pneumatic fitting — with a throat not lined with PTFE and no thermistor or heater cartridge in the box.

    Printer fit
    CR-10, CR-10S, CR-10 S5, CR-10 Mini, CR-10 S4, Ender 3 and Ender 3S, first bullet; Ender 3 Pro, Ender 3 V2 and Ender 5 series added in the title
    Maximum temperature
    Absent from the listing
    Heat break
    Straight-through throat not lined with PTFE, second bullet
    Nozzle standard
    Nozzle included, fifth bullet; size and thread absent from the listing
    Heater and thermistor
    NOT included; a 12 V or 24 V heater cartridge can be fitted, third bullet
    Cooling
    Absent from the listing text — the product photograph shows a red finned heatsink
    Melt zone
    Absent from the listing — aluminium, stainless steel and brass named as materials, fourth bullet
    Amazon reference
    B07Q4P4LKC (same reference on 6 Amazon marketplaces)
    EAN
    0605175678957
    • A throat with no PTFE lining, which the listing links to fewer clogs
    • A choice of 12 V or 24 V heater cartridge
    • Thermistor and heater cartridge not included

    Best for: A CR-10 or Ender 3 owner who keeps their existing thermistor and heater and needs the metal parts.

    ≈ 9 €
    Check price on Amazon
  • Titan-style extruder kit in parts — bracket, housing halves, large gear, drive gear, knob, spring, fitting, screws, hex keys — beside the assembled unit

    REDREX Titan-style Bowden extruder, plastic body, motor not included

    A Titan-style Bowden extruder from Redrex in injection-moulded plastic, with a guided filament path meant to stop flexible filament bending or jamming, an E-steps value of about 418.5, and no stepper motor in the box despite the one pictured.

    Printer fit
    Ender 3, CR-10 series, i3 Mega, i3 Mega S, i3 Mega X and Chiron with V5, V6 or J-head hotends, 1.75 mm PLA, ABS, TPU and PETG, title and second bullet
    Direct drive or Bowden
    Bowden, title and second bullet
    Gear ratio
    Absent from the listing
    Drive gears
    Absent from the listing text — the product photograph shows a large plastic gear on a shaft and a small toothed drive gear
    Filament path
    Optimised filament guide to stop filament bending, kinking or jamming in the feed, first bullet
    Weight
    Absent from the listing
    Firmware figure
    E-steps approximately 418.5, fourth bullet
    Amazon reference
    B07MZKY9WJ (same reference on 6 Amazon marketplaces)
    EAN
    0642940367081
    • A guided filament path aimed at flexible filament
    • An E-steps value: about 418.5
    • Stepper motor not included

    Best for: An Ender 3 or i3 Mega owner with a spare stepper motor who prints flexible filament through a Bowden setup.

    ≈ 12 €
    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.