What is the term for a small angled surface formed between two surfaces?

The term for a small angled surface formed between two surfaces is chamfer. A chamfer is created by cutting off a corner or edge, typically at a 45-degree angle, which results in a flat surface. This is commonly used in manufacturing and engineering to remove sharp edges, facilitating easier assembly and improving safety by reducing the risk of injury from sharp corners.

While fillets, bevels, and corner rounds are related concepts, they have distinct characteristics. Fillets create a rounded internal corner, typically used to strengthen the joint and reduce stress concentrations. Bevels are similar to chamfers but are often angled at different degrees for aesthetic or functional purposes. Corner round refers to a rounded edge that is specifically applied to the corners of shapes, resulting in a soft and smooth transition rather than an angled surface. This illustrates the unique nature of chamfers in the context of forming a small angled surface.