How does nozzle temperature impact stringing issues in FDM?

The correct choice highlights the relationship between nozzle temperature and stringing in fused deposition modeling (FDM). In this context, higher nozzle temperatures can indeed lead to increased stringing. This is because when the filament is too hot, it becomes more fluid and is more likely to ooze out of the nozzle unintentionally during non-print moves, creating those unwanted threads of material known as stringing.

On the other hand, lowering the nozzle temperature can help mitigate these issues. A cooler nozzle temperature can reduce the viscosity of the melted filament, making it less likely to flow out of the nozzle when it shouldn't be, thereby reducing the occurrences of stringing. However, there is a balance to strike; if the temperature is set too low, it may lead to under-extrusion and poor layer adhesion as the filament may not melt adequately during printing.

Overall, managing nozzle temperature is crucial for controlling stringing in FDM, and a fine-tuning process is often needed based on the specific material being used for optimal results.