 This study investigates how optimizing parameters such as filter radius, mesh size, and target volume fraction affect compliance and manufacturability of smooth self-supporting topologies for additive manufacturing using the solid isotropic microstructure with penalization method, SIMP, and Langela's AM filter. The results show that a higher filter radius leads to simpler topologies but curved corners may occur, while mesh size is not as significant as the filter radius in affecting manufacturability and performance. Experiments demonstrate that self-supporting topologies obtained are printable in SLM. This article was authored by Yun Fei-Thu, Bernard Rolf, Louis N. S. Chu, and others.