What the E3D High Flow ObXiDian® Creality K2 Plus Nozzle does

The E3D High Flow ObXiDian® Creality K2 Plus Nozzle is a premium replacement nozzle and HeatBreak assembly built for faster, more reliable extrusion on Creality K2 Series printers. Developed as an official collaboration between E3D and Creality, the nozzle combines high-flow performance, abrasive material durability, and quick drop-in installation for users who want to print quickly without giving up part quality.

[[MEDIA_1]]

The integrated all-metal nozzle and HeatBreak design improves thermal performance while helping prevent filament leaks and thermal runaway. Replacement is designed to be quick and straightforward, with nozzle changes taking less than 5 minutes.

High-flow nozzle for high-speed 3D printing

This high-flow nozzle is engineered to increase volumetric output so the printer can maintain reliable extrusion at higher motion speeds. E3D's internal multi-channel geometry splits the filament path into four separate channels, increasing the surface area in contact with the filament for improved heat transfer.

That design supports a maximum flow rate of up to 48 mm³/s and printing speeds up to 600 mm/s. In practical use, that means more consistent extrusion at existing speeds or more headroom to raise the slicer's volumetric flow limit and better use the motion system's capability.

Check out the full volumetric flow rate comparisons here.

ObXidian wear resistance for abrasive filaments

ObXidian® construction is built for users who print filled and abrasive materials regularly. A hardened steel insert paired with E3DLC™ coating gives the nozzle wear resistance orders of magnitude higher than other E3D nozzles, making it suitable for demanding filaments such as carbon fibre and glass fibre-filled materials.

The same coating also adds non-stick behaviour to the nozzle surface. That reduces plastic build-up around the nozzle, helps keep the tip cleaner during printing, and can contribute to improved surface finish with less maintenance.

Quad-metal construction for thermal control

Quad-metal construction is used to manage heat more effectively during printing. The titanium HeatBreak creates a sharp thermal gradient that helps keep the cold side cool while the hot side stays hot, reducing the risk of heat creep during extended or high-speed jobs.

This thermal design supports stable extrusion and helps preserve print reliability when working with a broader range of engineering and everyday filaments.

Improved layer adhesion at higher speeds

High-speed printing often trades away part strength or finish, but these nozzles are designed to maintain interlayer adhesion strength even when print speeds increase. That helps produce parts with the expected filament finish while still delivering the strength needed for functional applications.

Supported material use

The nozzle supports a wide range of common and engineering-grade materials, including PLA, ABS, PETG, TPU, PP, PC, PA, PLA-CF, ABS-CF, PETG-CF, PC-CF, and PA-CF. That makes the nozzle suitable for general prototyping, strong end-use parts, and abrasive composite filament printing on compatible Creality systems.

Installation and printer fit

As a drop-in option for the Creality K2 Series, the nozzle is intended to install without mount or fan-duct modifications. That makes it a practical upgrade for users who want higher flow and greater wear resistance without changing the surrounding hotend hardware.

Use cases for faster and more durable printing

• High-speed prototyping: Increase flow capability for shorter print times while maintaining consistent extrusion.
• Abrasive filament printing: Use carbon fibre and other filled materials with far greater wear resistance than standard nozzles.
• Functional part production: Maintain better interlayer adhesion at higher speeds for stronger, more useful printed parts.
• Low-maintenance operation: Reduce nozzle fouling and plastic build-up with the non-stick E3DLC™ coating.
• Quick maintenance workflows: Replace the nozzle in under 5 minutes when servicing compatible Creality printers.

Important filled filament considerations

Some filled materials contain particles that are close to, or larger than, smaller industry-standard nozzle diameters, including 0.4 mm. Printing those materials through smaller nozzle sizes increases the risk of jams, so the filament manufacturer's datasheet should be checked for the recommended minimum nozzle orifice diameter before use.

ObXidian® coated nozzles are exceptionally wear resistant and significantly outperform other hardened nozzles, but they are not immune to wear under extreme material conditions. Newer exotic engineering filaments with especially aggressive fillers, including materials such as Polymaker's Fiberon range (PA612-CF, PA6-CF, PA6-GF, and PA12-CF), can still cause significant wear, and E3D notes that specialist solutions for those materials are in development.