Which factor significantly influences the quality of an FDM print apart from the material used?

The significant influence of cooling rates on the quality of an FDM print stems from the way material solidifies as it is deposited layer by layer. In Fused Deposition Modeling (FDM), the printed filament is extruded through a heated nozzle and laid down in precise layers. Once deposited, the material starts to cool and solidify, which is where the cooling rate comes into play.

If the cooling rate is too fast, it can lead to issues such as warping, cracking, or layer adhesion problems. Insufficient cooling can cause the layers to remain semi-molten, resulting in sagging or poor layer bonding which can degrade print strength and accuracy. Conversely, an optimal cooling rate helps ensure that the layers adhere well to each other and maintain their intended shape without deformation.

Thus, controlling the cooling rate is crucial for optimizing print quality, as it affects the final mechanical properties and surface finish of the printed object. Factors such as fan settings, ambient temperature, and the design of the object can also play a role in how quickly or slowly the material cools. Ensuring proper cooling can dramatically enhance print performance and reliability, highlighting its importance alongside material selection.