Each nozzle has a certain opening diameter. The size of this determines a lot for your final 3D print. The standard nozzle diameter is 0.4mm. However, for some prints it is advantageous to replace the print head with a larger or smaller diameter. A rule of thumb regarding nozzle diameter is that the layer height should not exceed 80% of the nozzle diameter. If you are going to replace your nozzle with one of a different diameter, don't forget to adjust this in the slicer settings. The first time you replace the nozzle of your printer, it will take a while to lock, but once you get the hang of it, it's done in no time.
A small nozzle is suitable for detailed prints, if the details are on the horizontal plane. For the vertical details, the layer height plays an important role. Because less filament is squeezed out at the same time with a smaller nozzle, this results in a longer printing time.
If you use a smaller nozzle for printing support material, it will be thinner and therefore easier to remove. In addition, a small nozzle, for example 0.25mm, is ideal for printing texts and logos.
Because more filament can be squeezed out of the nozzle, your 3D prints will be ready faster. With a large diameter of the nozzle, it will not get clogged as quickly. Another advantage is the sturdiness of your object. The larger nozzle ensures that the walls of the 3D print are thicker. Due to this extra strength of the walls, the print will be stronger and can experience more resistance.
It therefore depends on the type of 3D print you want to make and for what purpose, to determine which nozzle is most suitable. Most people who use a 3D printer have more than one size nozzle in their possession.
