edgebore

Edgebore is a term used in materials engineering to refer to a distinctive edge feature that forms at the boundary of a material region, such as the interface between deposited layers in additive manufacturing or the cut edge after machining. It is distinguished from general surface roughness by its regular geometry, directional orientation, and confinement to the edge region. The concept serves as a descriptor in design and metrology to account for edge-specific deformation or removal that can affect part performance.

Edgebore develops when localized processes—thermal gradients during layer-by-layer deposition, plastic flow during cutting, or chemical etching—generate material removal or displacement along the edge. The result is a bore-like indentation or protrusion that runs parallel to the edge and may extend a short distance inward. The feature is typically measured by cross-section profiles and surface topography methods.

In practice, recognition of edgebore can influence tolerance analysis, surface finishing strategies, and interfacial bonding. In some cases, controlled edgebore has been explored to improve edge adhesion between layers or to create a mechanical interlock, while uncontrolled edgebore may contribute to stress concentrations or assembly fit issues. Detection methods include optical profilometry, scanning electron microscopy, and micro-CT imaging.

Related terms include burr, edge effect, and bore-shaped defect.