Skip to content

Bi-metal heat break, PID tuning required

ZIZISHU All-metal hotend kit for i3 Mega series, 12 V 40 W, bi-metal heat break, 0.4 mm

An all-metal V5 hotend kit for i3 Mega series 3D printers with a titanium and copper bi-metal heat break, aluminium heater block, 0.4 mm V6 brass nozzle, 12 V 40 W heater and an NTC100K B3950 thermistor rated to read up to 300 °C.

Blue finned hotend with silver heater block, brass nozzle, red-sleeved heater wires and a blue braided thermistor lead

ZIZISHU All-metal hotend kit for i3 Mega series, 12 V 40 W, bi-metal heat break, 0.4 mm

An all-metal V5 hotend kit for i3 Mega series 3D printers with a titanium and copper bi-metal heat break, aluminium heater block, 0.4 mm V6 brass nozzle, 12 V 40 W heater and an NTC100K B3950 thermistor rated to read up to 300 °C.

Printer fit
i3 Mega, Mega X, Mega S and Mega Pro, title
Maximum temperature
Absent from the listing as a hotend rating — the thermistor can measure up to 300 °C, fifth bullet
Heat break
Bi-metal: titanium alloy against heat creeping up, copper for heat dissipation, joined by a special process, second and fourth bullets
Nozzle standard
V6 brass nozzle, 0.4 mm, with a stated 0.01 mm tolerance, for 1.75 mm PLA, ABS, TPU and PA, title and first bullet
Heater and thermistor
12 V 40 W heater, title; NTC100K B3950 thermistor, 3 × 5.5 mm, about 100 mm total length, fifth bullet
Cooling
Absent from the listing text — the product photograph shows a blue finned heatsink
Melt zone
Absent from the listing — aluminium heater block, title
Amazon reference
B0D56SYYHC (same reference on 6 Amazon marketplaces)
EAN
0747086720407
  • A bi-metal heat break with the job of each metal explained
  • Thermistor type and size given: NTC100K B3950, 3 × 5.5 mm
  • The 300 °C figure is the thermistor’s reading limit, not a hotend rating

Best for: An i3 Mega series owner upgrading to an all-metal hotend and able to run PID tuning afterwards.

≈ 35 €
Check price on Amazon

Specifications

Printer fit
i3 Mega, Mega X, Mega S and Mega Pro, title
Maximum temperature
Absent from the listing as a hotend rating — the thermistor can measure up to 300 °C, fifth bullet
Heat break
Bi-metal: titanium alloy against heat creeping up, copper for heat dissipation, joined by a special process, second and fourth bullets
Nozzle standard
V6 brass nozzle, 0.4 mm, with a stated 0.01 mm tolerance, for 1.75 mm PLA, ABS, TPU and PA, title and first bullet
Heater and thermistor
12 V 40 W heater, title; NTC100K B3950 thermistor, 3 × 5.5 mm, about 100 mm total length, fifth bullet
Cooling
Absent from the listing text — the product photograph shows a blue finned heatsink
Melt zone
Absent from the listing — aluminium heater block, title
Amazon reference
B0D56SYYHC (same reference on 6 Amazon marketplaces)
EAN
0747086720407

The ZIZISHU i3 Mega hotend listing, bullet by bullet

Five bullets: a CNC-machined brass nozzle with a stated 0.01 mm tolerance and a smooth inner wall, for 1.75 mm PLA, ABS, TPU and PA; a bi-metal heat break of titanium alloy and copper, joined by a special process; a shinier nozzle and heat break with better thread precision and a smoother bore, and a note to run PID tuning after installation; the bi-metal heat break’s insulation against heat loss, temperature swings and heat creep; and an NTC100K B3950 thermistor of 3 × 5.5 mm and about 100 mm, able to measure up to 300 °C.

The ZIZISHU bi-metal heat break

Titanium where heat must stop, copper where it must leave. The second bullet splits the job: titanium alloy slows heat moving up from the block, copper carries it away. It is the kit’s central argument.

ZIZISHU, 300 °C and PID tuning

The only temperature is the thermistor’s measuring range. PID tuning, which the third bullet asks for, sets the printer’s heater control to the new part. The title starts with “Super Print”, while the brand field reads ZIZISHU, and no name is visible on the product photograph.

Availability

At the last look-up, the German, French, Italian and Spanish Amazon stores were asking 35 € to 36 €.

The American and British Amazon catalogues list the product, yet no seller was offering it.

Every figure here is Keepa’s reading on the date this page was last updated. Stock and prices can change at any time.

Prices quoted in this text were read on 15 September 2026. The live price is at the top of the page.

More hotends

  • Anycubic Vyper hotend with finned heatsink, heater block, brass nozzle, plugged cable and a white PTFE tube

    ANYCUBIC Vyper hotend, V5 J-head with Volcano nozzle, 24 V ceramic heater

    A replacement V5 J-head hotend with a Volcano nozzle and 24 V ceramic heater cartridge for the Anycubic Vyper, Kobra Max and Kobra Plus 3D printers, with plug-in thermistor and heater and a note on what to check if an NTC error appears.

    Printer fit
    Only Anycubic Vyper, Kobra Max and Kobra Plus; not Kobra Neo or Kobra Go, first bullet
    Maximum temperature
    Absent from the listing
    Heat break
    Absent from the listing — V5 J-head in the title
    Nozzle standard
    Volcano brass nozzle, title and second and fifth bullets; size absent from the listing
    Heater and thermistor
    24 V ceramic heater cartridge, title; thermistor and heater both supplied with a plug, third bullet
    Cooling
    Absent from the listing text — the product photograph shows a finned silver heatsink
    Melt zone
    Volcano design, said to heat the print head evenly, second bullet; no length given
    Amazon reference
    B09DKQ98L3 (same reference on 6 Amazon marketplaces)
    EAN
    0770490052598
    • The printers it does not fit are named: Kobra Neo and Kobra Go
    • Plug-in thermistor and heater, no wiring
    • No temperature figure

    Best for: An Anycubic Vyper, Kobra Max or Kobra Plus owner replacing the hotend with a plug-in part.

    ≈ 8 €
    Check price on Amazon
  • Black finned hotend with silver heater block, brass nozzle, red-sleeved heater wires and a blue braided thermistor lead

    BZ 3D Vyper all-metal hotend kit, 24 V 40 W, Volcano V5, bi-metal heat break, 0.4 mm

    An all-metal Volcano V5 J-head hotend kit from BZ 3D for Anycubic Vyper, Kobra Max and Kobra Plus 3D printers, with a titanium and copper bi-metal heat break, aluminium block, 0.4 mm brass nozzle, 24 V 40 W heater and an NTC100K B3950 thermistor rated to read up to 300 °C.

    Printer fit
    Anycubic Vyper, Kobra Max and Kobra Plus, title
    Maximum temperature
    Absent from the listing as a hotend rating — the thermistor reaches up to 300 °C in measurement, fifth bullet
    Heat break
    Bi-metal: titanium alloy to reduce upward heat conduction, copper for dissipation, second and fourth bullets
    Nozzle standard
    Volcano V5 J-head, brass nozzle 0.4 mm with a stated 0.01 mm tolerance, for 1.75 mm PLA, ABS, TPU and PA, title and first bullet
    Heater and thermistor
    24 V 40 W heater, title; NTC100K B3950 thermistor, 3 × 5.5 mm, about 100 mm total length, fifth bullet
    Cooling
    Absent from the listing text — the product photograph shows a black finned heatsink
    Melt zone
    Absent from the listing — Volcano V5 and aluminium heater block, title
    Amazon reference
    B0DFY9KSX6 (same reference on 6 Amazon marketplaces)
    EAN
    0747086755584
    • A titanium and copper heat break, with each metal’s role stated
    • Thermistor type and dimensions given
    • The 300 °C figure is the thermistor’s measuring limit

    Best for: An Anycubic Vyper, Kobra Max or Kobra Plus owner moving to an all-metal Volcano hotend.

    ≈ £34 / 36 €
    Check price on Amazon
  • QWORK hotend with a finned silver heatsink, brass nozzle, two plugged wires and a long white PTFE tube

    QWORK V5 J-head hotend for i3 Mega series 3D printers, 12 V 40 W

    A V5 J-head replacement hotend from QWORK for i3 Mega series 3D printers only, with an aluminium heater block stated to reach 250 °C, a 12 V 40 W heater, a 0.4 mm nozzle and a thermistor and heater cartridge fitted with plugs.

    Printer fit
    Only i3 Mega series 3D printers, title and second bullet
    Maximum temperature
    The aluminium heater block can reach 250 °C, first bullet
    Heat break
    V5 heater tube, fourth bullet; no material given
    Nozzle standard
    V5 J-head, 0.4 mm nozzle for 1.75 mm filament, title and fourth bullet
    Heater and thermistor
    12 V 40 W heater; thermistor and heater cartridge both supplied with plugs, fourth and fifth bullets
    Cooling
    Absent from the listing text — the product photograph shows a finned silver heatsink
    Melt zone
    Absent from the listing — a 45° chamfer at the rear and a flat, smooth nozzle section are described, third bullet
    Amazon reference
    B0B1WWMMYS (same reference on 5 Amazon marketplaces)
    EAN
    0795973834089
    • Thermistor and heater cartridge arrive with plugs, as the fifth bullet says
    • A temperature figure for the heater block: 250 °C
    • Only for the i3 Mega series

    Best for: An i3 Mega series owner replacing a worn V5 hotend with a plug-in part.

    ≈ 8 €
    Check price on Amazon

Elsewhere on the workbench

  • Fanned plywood sheets printed A4 3mm 12PCS 300 × 210mm, with wooden model kits

    JIYANA Poplar plywood 3 mm, A4 300 × 210 mm, 12 sheets

    Twelve A4 sheets of 3 mm poplar plywood from JIYANA, 300 × 210 mm, described as compatible with saws, knives and laser machines and as giving cleaner edges than chipboard or MDF.

    Thickness
    3 mm, title and first bullet
    Sheet size
    300 × 210 mm (A4), title; tolerances described as controlled without a figure, first bullet
    Species
    Poplar plywood, second bullet
    Glue type
    Absent from the listing
    Flatness
    Absent from the listing
    Grade
    Absent from the listing
    Quantity
    12 sheets, title and first bullet
    Amazon reference
    B0G63WHF6P (same reference on 5 Amazon marketplaces)
    EAN
    0617230022643
    • Species named: poplar
    • Laser devices named, as the third bullet says
    • No tolerance figure

    Best for: A laser user who wants a known species at A4 size and does not need stated tolerances.

    ≈ 13 €
    Check price on Amazon
  • Fanned plywood sheets printed 12PCS A4 2mm 210mm × 300mm, with small wooden model kits

    KORVORIA Basswood plywood 2 mm, A4 300 × 210 mm, 12 sheets

    Twelve A4 sheets of 2 mm plywood from KORVORIA in basswood with a medium-density glue layer, 300 × 210 mm, sanded on both sides and sold for laser cutting, CNC routing and hand tools.

    Thickness
    2 mm, title and fourth bullet
    Sheet size
    300 × 210 mm (A4), tolerance described as strictly controlled without a figure, title and first bullet
    Species
    Basswood (linden), second bullet
    Glue type
    Medium-density glue layer, second bullet; adhesive type not named
    Flatness
    Absent from the listing as a figure — “excellent flatness” without warping, fourth bullet
    Grade
    Absent from the listing
    Quantity
    12 sheets, title and first bullet
    Amazon reference
    B0H5171HR8 (same reference on 4 Amazon marketplaces)
    EAN
    8901089518481
    • The thinnest plywood of the seven: 2 mm
    • Basswood named as the species
    • No tolerance figure

    Best for: A diode laser user cutting fine models and puzzles that need thin, light sheets.

    ≈ 12 €
    Check price on Amazon
  • Stack of plywood sheets labelled A4 13 PACK, 300 × 210 × 3 mm, with wooden animal models

    lompyeu Birch plywood 3 mm, A4 300 × 210 mm, 13 sheets

    Thirteen A4 sheets of 3 mm birch plywood from lompyeu, 300 × 210 mm, sanded smooth, described as not chemically treated and meeting EU environmental standards, for laser cutting, CNC routing and fretwork.

    Thickness
    3 mm, title and second bullet
    Sheet size
    300 × 210 mm (A4), title
    Species
    Birch plywood, first bullet
    Glue type
    Absent from the listing
    Flatness
    Absent from the listing — stored dry to avoid warping, fifth bullet
    Grade
    Absent from the listing
    Quantity
    13 sheets, title
    Amazon reference
    B0FDWLKCB7 (same reference on 4 Amazon marketplaces)
    EAN
    0717710014264
    • Birch named as the species
    • Laser cutting and CNC routing named
    • No tolerance, glue or grade

    Best for: A laser or CNC user who prefers birch plywood at A4 size.

    ≈ 15 €
    Check price on Amazon

All hotends