Final answer:
The Fillet command creates a rounded transition between two edges, while the Chamfer command creates a beveled edge at a specific angle, often 45 degrees.
Step-by-step explanation:
The main difference between the Fillet and Chamfer commands in engineering and computer-aided design (CAD) applications is in the way they create a transition between two surfaces or edges. The Fillet command creates a rounded transition or curve that connects the edges, which can distribute stress evenly and is often used for mechanical parts that undergo fatigue. On the other hand, the Chamfer command creates a beveled edge that is a straight line and typically at a 45-degree angle to the two adjoining surfaces, often used for clearance or simply for aesthetic purposes.To give a practical example, consider a block of material with two edges meeting at a 90-degree angle. Using the Fillet command would result in a smooth, rounded corner, whereas using the Chamfer command would result in the edge being cut at an angle, creating a flat, angled surface.