Vendor: Slice Engineering

Copperhead® Hotend - Slice Engineering

SKU: SE-He-Copperhead-ScrewG2
Regular price $3,480.00 TWD Sale price $3,480.00 TWD
Style Screw Mount - G2

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.

Not sure which variant to choose? Click here.

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.

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 20 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


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 Screw Mount Groove 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


Copperhead Hotend® The Original Mosquito® Mosquito® Magnum Mosquito Magnum+®
Max Flow Rate Capacity 20 mm3/s (89 g/hr) 25 mm3/s (112 g/hr) 30 mm3/s (134 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