 The study investigates how the surface roughness, Ra, in overhang regions of laser powder bed fusion, LPBF, printed parts is affected by the overhang angle, theta, which results from a combination of border-track contour, powder adhesion, warp deformation, and dross formation. When 0° less than or equal to theta less than or equal to 15°, Ra is not significantly affected since only a small area of the melt-pull boundaries contacts the powder bed resulting in slight powder adhesion. When 15° theta less than or equal to 50°, powder adhesion is enhanced by the melt-pull sinking and increased contact area between the melt-pull boundary and powder bed, leading to a sharp increase in Ra. When theta greater than 50°, large waviness of the overhang contour, adhesion of powder clusters, severe warp deformation, and dross formation further increase sharply. This article was authored by Xiaotuan Feng, Amar M. Comet, Sohil Sabuni and others. We are article.tv, links in the description below.