How to design support structure in fused deposition modeling (FDM) technology?
Release Time : 2025-01-22
The design of support structures in fused deposition modeling (FDM) technology is a key link to ensure that printed parts can be smoothly formed and maintain high precision.
In the FDM printing process, the main function of the support structure is to provide necessary support to prevent the printed parts from collapsing or deforming during the printing process. Especially when printing parts with suspended structures, the support structure is particularly important.
The support structures in FDM technology are mainly divided into basic supports and protruding supports. Basic supports are mainly used to improve the surface finish of the bottom of the molded part and facilitate the removal of the molded part from the workbench. Protruding supports are used to support the suspended or inclined printed parts to ensure the overall stability of the printed parts.
When designing support structures, it is necessary to follow the principle of easy removal and no damage to the model. The support structure should be as simple as possible to avoid complex structures that increase the difficulty of removal. At the same time, the support structure should be kept at an appropriate distance from the printed part to avoid scratches or damage to the printed part during removal.
In FDM printing software, support structures are usually automatically calculated and generated. Users can adjust parameters such as the density, thickness, and shape of the support structure as needed. In addition, users can also manually add or delete support structures to meet specific printing needs.
Support structures can be made of the same material as the printed part or a different material. Support structures made of different materials are easier to remove after printing without contaminating the printed part. However, this requires the use of an FDM printer with dual nozzles, one for the model material and the other for the support material.
To reduce the difficulty of removing support structures, some optimizations can be made during design. For example, the number of support structures can be minimized, and the overhanging parts can be reduced by adjusting the printing angle or adding auxiliary structures. In addition, some special support structures, such as tree supports or grid supports, can be used, which are easier to remove.
After printing, the support structures need to be carefully removed. This usually requires the use of hand tools such as pliers or blades. Fused Deposition Modeling (FDM) During the removal process, it is necessary to avoid damaging the printed part. After removing the support structures, the printed part also needs to be post-processed, such as sanding and polishing, to improve its surface quality and aesthetics.
