0.3mm Nozzle for 3mm Filament - Brass

This is a 0.3mm E3D replacement nozzle for the E3D V5 and V6 hot end assemblies for 3mm filament.

The brass nozzle is a great general purpose, low cost option in 3D printing, with a great balance of properties including thermal conductivity, precise machining capabilities, as well as corrosion and pitting resistance for a smooth surface finish and clean filament extrusion. The top of the nozzle is threaded in order to fit into the E3D V5 heater block or the E3D V6 heater block.

It is good to keep in mind, however, that brass nozzles are vulnerable to abrasive erosion by more exotic filaments like carbon-fibre filled materials, metal powder filled materials and glow in the dark filaments, and also may be damaged by nasty head crashes.

Quick Guide to Changing Nozzles:

When swapping out E3D Nozzles from other E3D components, we recommend utilising 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 by E3D 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 E3D themselves it is manufactured to the same specs and quality controlled locally to ensure it functions exactly as expected while saving you money.