Shell Thickness Shell thickness refers to the outer walls of a 3D-printed object and is a key parameter in defining strength and durability. A thicker shell can enhance structural integrity, making the object more resistant to stress and impact. In FDM printing, shell thickness is typically defined in multiples of the nozzle diameter; for example, a 0.8 mm shell thickness with a 0.4 mm nozzle means two perimeter passes. In SLA and SLS printing, shell thickness influences resin curing or sintering stability. Optimizing shell thickness is essential to balancing material usage, print time, and the final product’s mechanical properties. Thin shells can lead to fragile prints, while overly thick shells waste material and increase print time. |