What feature is typically used to remove sharp edges in a 3D part model for safety?

The feature commonly used to remove sharp edges in a 3D part model for safety is the chamfer. A chamfer creates a flat surface at an angle, connecting two edges, which effectively removes the sharpness of the corner. This is particularly important in manufacturing and prototyping, as it enhances safety by reducing the likelihood of injury when handling parts. Additionally, chamfers can help improve the flow of materials during processes like casting and can facilitate assembly by allowing parts to fit together more easily.

While fillets also serve to round edges and eliminate sharp corners, they do so by creating a curved transition rather than a flat one. Bevels are similar to chamfers in creating angled edges, but they are often used more in the context of larger, more generalized edge treatments rather than specifically for safety. The term "smooth" generally refers to a surface finish rather than the geometric alteration of edges.

Therefore, choosing the chamfer as the feature for smoothing out sharp edges aligns with industry practices in design and manufacturing for enhancing safety and functionality.