Screw Mount
Screw Mount
Groove Mount
Copperhead Hotend - Standard G2
Rep Rap 1.75
Mk 10
C-Pro Max
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Copperhead® Hotend

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The Copperhead® Hotend is an open-source, modular hotend that integrates into various heat sink designs. With its signature Bimetallic Heat Break™, Copperhead prevents heat creep and reduces clogging in an affordable and adaptable package—making it an excellent choice for anyone looking to improve the performance of their desktop printer.

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Open-Source Ecosystem
Copperhead is open source and published under a CC-BY-SA 4.0 license. Its modular heat break system integrates easily into virtually any heat sink design. Copperhead Heat Breaks are made with the same bimetallic technology found in the Mosquito®’s signature Bimetallic Heat Break™ but with a thicker wall for superior impact and abrasion resistance.

Bimetallic Heat Break™
Copperhead Bimetallic Heat Breaks are 60% more efficient at heat creep reduction than monolithic designs. Using the same high-strength copper alloy designed for optimal thermal conductivity found in Mosquito Heat Breaks, Copperhead Heat Breaks boast a higher temperature rating and flow rate potential over PTFE-lined heat breaks.

Adjustable Z-Height for Dual Extrusion Setups
Machined out of aircraft-grade aluminum, the Copperhead Heat Sink’s shaft collar enables easy z-height adjustment of the heat break and hot block—making it ideal for dual extrusion setups. Whether creating intricate designs or experimenting with multi-material prints, the Copperhead Hotend effortlessly adapts to your specific requirements, opening up a world of possibilities.

Super-Conductive Hot Block
Copperhead is named for its hardened, nickel-plated, copper alloy hot block. Rated to 450°C, Copperhead enables printing of nearly every commercially available filament, from basic PLAs to medical-grade PAEKs. The hot block design isolates the sensor from the heater with a physical air gap, improving the temperature feedback loop, and features convenient wrench flats to simplify nozzle changes.

Additional Features and Benefits

  • Compatible with RepRap style nozzles (M6 x 1.0 threads with a 7 mm thread length)
  • Compatible with Copperhead Silicone Boots
  • Rated to 450°C
  • 100% Made in the USA

Included in the Box:

  • Copperhead Heat Break*
  • Copperhead Hot Block
  • Copperhead Heat Sink & Mounting Hardware**

*Fan, Heater Cartridge, Nozzle, & Temperature Sensor sold separately. Copperhead Heat Break will vary depending on the selected variant.

**Heat sinks and mounting hardware are only included with screw/groove mount variants.

Creality® and Ender® are registered trademarks of Shenzhen Creality 3D Technology Co, Ltd. Slice Engineering, LLC is not affiliated with nor endorsed by Shenzhen Creality 3D Technology Co, Ltd.

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Technical Specifications

Dimensions See Copperhead Hotend Comparisons below
Mass See Copperhead Hotend Comparisons below
Cooling Air
Filament Diameter 1.75 mm
Temperature Rating 450°C
Maximum Flow Rate Capacity 33 mm3/s
Nozzle Compatibility M6 x 1.0 (7 mm thread length)
Maximum Heating Power 50 W (12 or 24 V)
Temperature Sensor Compatibility 15 mm length, ø 3 mm
Number of Temperature Sensors 1
Manufacturing Made in the USA

Copperhead Hotend Comparisons

Screw Mount - G2 Groove Mount - G2 Standard - G2 RepRap 1.75 Mk 10 C-E C-Pro Max
Dimensions 28 x 21.5 x 47.5 mm 28 x 21.5 x 59 mm 27 x 15.5 x 27 mm 27 x 15.5 x 29 mm 27 x 15.5 x 33 mm 27 x 15.5 x 34 mm 27 x 15.5 x 29 mm
Mass 34.4 g 39.1 g 22 g 22.2 g 26.1 g 24.1 g 21.2 g
Mount Type Groove Mount Screw Mount ø5.99 x 13 mm Shank M7 x 1.0 x 15 mm Shank ø7.78 x 19 mm Shank ø6.98 x 20 mm Shank M6 x 0.75 x 15 mm Shank

Hotend Comparisons

Copperhead Hotend® The Original Mosquito® Mosquito® Magnum Mosquito Magnum+®
Max Flow Rate Capacity 33 mm3/s (147 g/hr) 35 mm3/s (156 g/hr) 40 mm3/s (179 g/hr) 90 mm3/s (402 g/hr)
Nozzle Orifice 0.2 – 0.8 mm 0.2 – 0.8 mm 0.4 – 1.2 mm 0.4 – 1.8 mm
Mass* 21.2 - 39.1 g 37 g 41 g 73 g
Overall Height* 27 - 59 mm 41 mm 41 mm 60 mm
Max Power 50 W 50 W 50 W 100 W
Filament Size 1.75 mm 1.75 or 2.85 mm 1.75 mm 1.75 or 2.85 mm
One-Handed Nozzle Change™ No Yes Yes Yes

* Air-Cooled Version (1.75 mm); Mass/height includes the heat sink, heat break, & hot block

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