Why is print speed an important variable in FDM printing?

Print speed is a critical variable in Fused Deposition Modeling (FDM) because it directly influences multiple aspects of the printing process, including print quality, layer adhesion, and the total time required to complete a print job.

When print speed is increased, molten filament is deposited more quickly, which may lead to inadequate cooling between layers. This can result in poor layer adhesion, where the layers do not bond as effectively, potentially compromising the structural integrity and appearance of the final print. In contrast, printing at slower speeds allows for better cooling and more controlled deposition, which enhances the quality of layer bonding and surface finish.

Additionally, the overall time to complete a print job is directly proportional to the print speed. Faster speeds can significantly reduce the time taken to produce an object, which is often desirable in production environments where time efficiency is crucial. However, there is a balance to be struck; excessively high print speeds can lead to quality issues, necessitating careful consideration when setting up a print job. Thus, understanding and adjusting print speed is essential for achieving the desired balance between quality and efficiency in FDM printing.