When to increase or decrease the nozzle in 3D printing
90% of 3D printers stay with the same nozzle as the one that comes with the printer (usually 1.75 mm wire thickness + 0.4 mm material output), the main reason is convenience.
0.4 mm diameter is indeed quite a comfortable midpoint.
Nozzle in English.
A metallic part that heats up through which the printing material passes.
The diameter of the hole is critical to the result we want to get.
The diameter of the wire in most printers is 1.75 mm and the diameter of the final hole is usually 0.4 mm.
There are few printers whose wire diameter is 2.85 mm and the final hole is usually 0.4 mm.
The heating system consists of a heating element and a thermistor.
As soon as the heating body heats the block to the desired temperature – the resistance of the thermistor changes and accordingly the controller.
The controller – stops the heating operation. When the temperature drops, it turns on the heating element again.
Changing the diameter affects the print quality:
Small diameter, high precision and long printing time.
A large diameter significantly shortens the printing time.
If using Volcano, the length of the nozzle is twice as long, which means the heating area is doubled.
When working with very hard materials it is recommended to switch to a titanium steel nozzle.
It should be taken into account that the thermal conductivity is less good and the heating of the block should be raised by 10 degrees.
Another solution, to increase the diameter of the nozzle so that the particles pass easily.
Before disassembling a nozzle, it is important to heat the heating block so that the metal expands.
Without heating, the nozzle will break in the block.
It is not easy to take out a broken ink in a block.
Materials with particles
In some cases the particles are decorative, some engineering.
Wood or marble particles can be used for decoration.
Carbon particles are mainly suitable for engineering materials (carrier for materials that have shrinkage).
In which cases a nozzle diameter of 0.6 or 0.8 mm is better.
In addition, if there is a high work volume, a metallic nozzle is recommended (in materials with particles).
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