What is the purpose of using a chamfer in a 3D part model?

Using a chamfer in a 3D part model primarily serves the purpose of removing sharp edges, which enhances safety. Sharp edges can pose risks during handling and assembly, potentially leading to cuts or injuries. By applying a chamfer, the edges are smoothed out, making them safer to interact with. Additionally, chamfered edges can facilitate the assembly of parts by guiding components together more easily and reducing stress concentrations that might occur at sharp corners, ultimately contributing to the structural integrity of the part.

While enhancing surface finish and adding complexity might be benefits in certain cases, the primary purpose focuses on safety and practicality. Similarly, increasing part volume is not directly a purpose of chamfering; rather, chamfering usually trims down material from edges rather than increasing it.