Yesterday I posted about what can happen if your printing speed is too low. You basically end up with a big, oozy mess. Today I wanted to talk about what happens if your printing speed is too high.

What happens to the filament inside the nozzle?

The filament inside the nozzle is melted by the heat of the extruder, and then pushed out through a small opening at the tip of the nozzle. The nozzle acts like a valve that controls the flow and direction of the molten filament. The filament needs to be hot enough to flow smoothly, but not too hot to burn or degrade. The temperature of the filament also affects its viscosity, or how thick or thin it is. A higher viscosity means a thicker filament that is harder to push out, while a lower viscosity means a thinner filament that is easier to push out.

When you print at high speeds, you are asking the extruder to push out more filament in less time. This means that the filament has less time to melt and reach the optimal temperature and viscosity for extrusion. As a result, the filament may not flow properly, and may stick to the nozzle instead of adhering to the print bed or the previous layer. This can cause several problems, such as:

• Filament curling: This is when the filament curls up around the nozzle instead of laying flat on the print bed or the previous layer. This can happen when the nozzle is too close to the bed or the layer, or when the bed or layer is not hot enough to keep the filament from cooling too quickly. Curling can lead to poor adhesion, stringing, blobs, and clogs.
• Filament oozing: This is when the filament leaks out of the nozzle when it is not supposed to, such as during travel moves or retraction. This can happen when the nozzle is too hot, or when the retraction settings are not optimal. Oozing can lead to stringing, blobs, and poor surface quality.
• Filament jamming: This is when the filament gets stuck inside the nozzle and prevents further extrusion. This can happen when the nozzle is too cold, or when there is dust