How does the size of the layer affect the strength of the final part?

The selection of thinner layers leading to better bonding and strength is rooted in the mechanics of additive manufacturing processes. When layers are deposited in a 3D printing environment, the quality of the bond between each layer is crucial for the overall structural integrity of the final part. Thinner layers allow for more precise placement and better adhesion between layers.

Thinner layers typically cool and solidify more evenly, reducing the likelihood of defects such as warping or delaminating, which can occur with thicker layers. Additionally, having a larger surface area between the layers enhances the interaction at the molecular level, leading to stronger interlayer bonds. This improved interlayer bonding contributes significantly to the overall strength and durability of the printed part.

In contrast, thicker layers may result in insufficient bonding between layers, which can compromise the strength of the finished product. They can also introduce more pronounced thermal gradients, which can induce stresses and potential weaknesses.

Thus, the impact of layer thickness on the final part's strength is substantial, with thinner layers providing distinct advantages in terms of bonding and overall mechanical properties.