Casting in additively manufactured sand molds enables complex designs but cast components generally suffer from a rough surface. In the present work, the influence of printing orientation on sand mold roughness and its transfer to the cast component are experimentally investigated. Because of the Mean-Line method filtering, traditional standardized roughness parameters do not permit to catch the different scales linked to the sand printing process. In contrast, Fourier analysis made on printed sand surfaces highlights the impact of printing direction on sand surface stratification that imprint stratifications on metal casting. Metal wettability is characterized, from sand grain scale to stratification step scale, and is correlated to the roughness scales that are transferred from the mold to the casting. Eventually, a transfer function is determined for the present casting conditions.