0.4mm MK8 Nozzle for 3mm Expand

0.4mm MK8 Nozzle for 3mm



This 0.4mm MK8 Nozzle is compatible with 3mm filament printers and is designed for high precision 3D printing – Ideal for highly detailed small prints.

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These 0.4mm MK8 Nozzles for 3mm filament diameter are designed to be used in 3D Printing for high detail and precision, based on the Makerbot MK8 design and capable of fitting a wide range 3mm hotend assemblies. Although they are not designed by Makerbot, they are made to the exact same specification with strict quality testing to ensure the same quality that you can expect from original MK8 nozzles.

These 3D Printer Nozzles are made from durable brass, which is an excellent choice if you are eager to print ABS or PLA plastics. However, they might not be a good choice for Exotic Filaments like carbon fibre or glow in the dark, as the abrasive nature of such filaments can easily damage the nozzles and widen the output diameter. For any standard types of 3D Printing Filament, however, these nozzles are more than capable of producing quality prints with high levels of detail.

Technical Specifications:

  • Material

– Brass

  • Input Diameter

– 3mm

  • Output Diameter

– 0.4mm

  • Thread Diameter

– M6

  • Height

– ±13mm

  • Width

– ±7mm


Technique for Changing Nozzles:

When swapping out your 0.4mm MK8 Nozzle for 3mm filament from other hot end components, we recommend utuilising the hot tightening technique. Follow this procedure - being careful not to burn yourself.

  • Unscrew the heat-break from the heatsink half a turn to be sure you are not tightening against the heat-break in later stages.
  • Heat up your hot end to 285°C. Do not overshoot as you risk damaging your thermistor.
  • Remove the existing nozzle from the heater block.
  • Insert the new nozzle.
  • Gripping the heater block tighten the nozzle. Do not apply any torque through the heat-break, they are fragile.
  • Turn off the heat and allow the hot side to cool.
  • Re-tighten the heat-break into the heatsink.

The reason for this is that the aluminium heater blocks used have a higher coefficient of thermal expansion than the brass and steel used in the nozzles and heat breaks. This results in a small gap being created between the nozzle and the break inside the block when the hot end is at temperature, but this only happens if the nozzle has been tightened while cold.


*Note this is not supplied by Makerbot themselves, although it is manufactured to the same specs and is quality controlled locally to ensure it functions exactly as expected while saving you money.

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0.4mm MK8 Nozzle for 3mm

0.4mm MK8 Nozzle for 3mm