What does layer bonding refer to in FDM printing?

Layer bonding in Fused Deposition Modelling (FDM) printing specifically refers to the adhesion of one layer to another. This concept is crucial for ensuring the structural integrity of a 3D printed object. During the printing process, molten thermoplastic filament is deposited layer by layer. For the layers to effectively bond, the material must cool and set properly while still being warm enough to allow for inter-layer adhesion. Strong layer bonding leads to better mechanical properties, improving the overall durability and strength of the printed part.

In contrast, the thickness of each printed layer relates to the resolution and quality of the print but does not directly describe the bonding process. The speed of the printing process pertains to how quickly the printer can produce the object but does not affect the bonding itself. Finally, the weight of the printed object is a consequence of the material used and the overall design but is not an indicator of layer bonding or its quality. Therefore, understanding layer bonding is vital for achieving successful prints in FDM technology.