Tool · Mechanical upgrades

Extruder and hotend finder

Pick an extruder, hotend or heat break to see what its maker states: filament size, gearing, nozzle standard, temperature and the printers it names.

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Short answer

Pick an extruder, hotend or heat break below to see what its maker states: the filament size it takes, its gearing, the nozzle standard, its temperature rating and the printers it names. Use it to rule a part out before you buy, then check the part maker's fit list for your exact printer.

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Choose your extruder system to see the key facts and what fits. Each fact links to its source on the full page.

All extruder systems

What the table shows

Extruder systemTypeFilament sizeGear ratioNozzle standardMax temperature
Bondtech BMG extruderGeared extruderNot confirmedAdvertised 3:1; Klipper says the actual gearing is 50:17Not confirmedNot confirmed
Bondtech LGX and LGX LiteExtruder with a custom NEMA17 25 mm pancake motor (LGX)1.75 mm only (LGX)LGX: not stated. Original LGX Lite: Klipper gear_ratio example 44:10, 37:17Not confirmedNot confirmed
Micro Swiss NG direct drive extruderDirect drive extruder with an included LDO stepper motorNot confirmed3:1Not confirmedNot confirmed
Prusa NextruderExtruder with a 10:1 planetary gearboxNot confirmed10:1 planetary gearboxPrusa Nozzle and Prusa Nozzle CHT; E3D V6 nozzles only with the Nextruder V6 Nozzle AdapterNot confirmed
E3D V6 hotendHotend1.75 mm (E3D's V6 brass nozzle page)Not confirmedE3D V6 nozzle, M6 threadBy nozzle: 300 °C brass and ObXidian; 350 °C hardened steel; 500 °C stainless steel, plated copper and Nozzle X
E3D Revo hotend systemHotend system with one-piece nozzle-and-heatbreak units1.75 mm; 2.85 mm Revo nozzles are not offered as standardNot confirmedRevo nozzle; not compatible with V6-style heater blocks300 °C for standard brass and Revo High Flow nozzles
E3D Volcano hotendHotend1.75 or 2.85 mmNot confirmedE3D Volcano nozzle300 °C, upgradable to 500 °C
BIQU Panda RevoHotend for Bambu Lab printers, using E3D Revo nozzlesNot confirmedNot confirmedE3D RapidChange Revo nozzles, except Revo Belt300 °C (BIQU spec table)
Slice Engineering Copperhead heat breakHeat breakNot confirmedNot confirmedFits hot blocks with M6x1.0 threads450 °C (heat break alone)

Every value comes from the part maker's own pages, read on 2026-10-08, and carries its source on the system's page. A few examples of what those pages settle:

  • Revo vs V6. E3D states that Revo nozzles are not compatible with V6-style heater blocks,[1] and describes Revo Six as a drop-in upgrade for V6-fitted printers, with the same height, diameter and mounting as the V6.[2] So Revo Six replaces the hotend; Revo nozzles do not go into a V6 block.
  • Filament size. Bondtech states that its LGX supports only 1.75 mm filament.[3]
  • Threads. Slice Engineering says its Copperhead heat break fits hot blocks with M6x1.0 threads, and its 450 °C rating applies to the heat break alone.[4]

A temperature figure on these pages is the part's rating. The usable limit of a whole hotend also depends on its heater, sensor and firmware.

The outside-measurement column

Some system pages carry an outside measurement: a named third party's published result for one setup, never a rating. For example, CNC Kitchen's 2021 test on an E3D Hemera with 0.6 mm nozzles found a Bondtech CHT reached about 40 mm³/s at roughly 5% under-extrusion, against about 30 for a Volcano and about 15 for a standard V6.[5] Your printer, filament and temperature will give different numbers. We do not measure parts ourselves. Where no source states a value, the field reads "Not confirmed".

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Choose your extruder system to see the key facts and what fits. Each fact links to its source on the full page.

All extruder systems

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Questions

Do Revo nozzles fit my V6 hotend?

No. E3D states that Revo nozzles are not compatible with V6-style heater blocks. Revo Six replaces the V6 hotend itself, with the same height, diameter and mounting.[1][2]

Can I run 2.85 mm filament through a Bondtech LGX?

No. Bondtech states that the LGX supports only 1.75 mm filament.[3]

What does the outside measurement column mean?

It is a named third party's published result for one setup, such as CNC Kitchen's flow test on an E3D Hemera with 0.6 mm nozzles. It is not a rating, and your printer may differ.[5]

Sources and changes

  1. E3D Revo® Nozzles · Manufacturer · Standard brass Revo nozzle product page with FAQ; 1.75 mm; all variants sold out at retrieval. · checked 8 Oct 2026
  2. Revo cold sides: Everything you need to know (E3D) · Manufacturer · E3D news article on Revo Micro, Six, Hemera and Voron cold sides; served from E3D's beta host. · checked 8 Oct 2026
  3. LGX Large Gears eXtruder (Bondtech AB) · Manufacturer · LGX product page: filament diameter, included motor, mounting. · checked 8 Oct 2026
  4. Copperhead® Bimetallic Heat Break | Slice Engineering · Manufacturer · Copperhead heat break product page: materials, thread compatibility, temperature rating, flow with Copperhead block. · checked 8 Oct 2026
  5. Bondtech CHT High Flow Nozzle Reviewed | CNC Kitchen · Independent source · 2021 flow measurements of CHT vs V6 and Volcano on an E3D Hemera. · checked 8 Oct 2026
  • : First published.

Next editorial review due 7 Jan 2027.