Support structures are an important feature of the 3D printing process. It helps in creating unsupported shapes/designs and complex geometries. Without support structures, it is impossible to realize the full potential of 3D printing and the freedom to design unconventional shapes. The support structure can be removed later during the post-processing of the 3D-printed part. Support structures can be created for plastic and metal parts according to the requirements. Also, there are various strategies to minimize or eliminate the need for support structures entirely by applying DfAM principles. Support is important to prevent deformation and other defects of the part during the printing process. Unique support materials are available which can be easily detached from the part without much effort leaving behind a smooth surface.