How are support structures extruded in Fused Deposition Modeling?

Support structures in Fused Deposition Modeling (FDM) are extruded in the same manner as the primary part being printed, with the use of the same print tool. This ensures that the support structures are well integrated with the part they are meant to support. The nozzle of the printer deposits the support material simultaneously with the part, allowing for precise placement and adherence.

Using the same extrusion technique and materials facilitates strong adhesion between the part and the supports, which is essential for ensuring that the overhangs or intricate features of the model do not collapse during the printing process. Additionally, this strategy helps in simplifying the overall print process, as it avoids the complexities that would arise from utilizing a separate tool or process for creating supports.

Support structures must mimic the main print's geometry to be effective, providing the necessary stability while being easily removable if a soluble material is used. This is a standard practice in FDM to optimize both the build time and the overall quality of the printed object.