Infill Percentage Impacts Surface Roughness of 3D Printed Parts

A study has investigated the relationship between the infill percentage used in 3D printing and the resulting surface roughness of plastic components. The research specifically focused on the contact surface between the printed part and the build platform, a critical area for adhesion and post-processing.

Findings suggest that varying the infill density has a direct and measurable impact on the topography of this interface. Higher infill percentages can lead to a more solid and dense bottom layer, potentially altering the surface texture. Conversely, lower infill percentages, which create more internal voids, might also influence the smoothness or roughness of the surface that contacts the build plate.

This understanding is crucial for optimizing 3D printing processes. Surface roughness affects not only the aesthetic quality of a printed object but also its functional properties, such as friction, wear, and adhesion to other surfaces or subsequent layers. Controlling the infill percentage offers a potential method for fine-tuning these characteristics.

The study underscores the importance of considering internal structural parameters, like infill density, when aiming for specific surface finish requirements in additive manufacturing. Further exploration may involve correlating specific infill patterns and percentages with quantifiable surface roughness metrics.