Vent attachment for a fridge

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Designing a straightforward CAD model of a refrigerator vent attachment or lid within SolidWorks 2017 involves several steps that can be broken down into a logical sequence. First, launch the program and navigate to the part template where you will begin creating your design from scratch. Upon entering this template, create two extruded sketches for the lid's base, one for the front face and another for the back. The former should include a circular hole at its center to allow airflow while the latter must feature an edge that perfectly matches the refrigerator's body. Next, combine these sketches into one solid part. This can be done by merging them using the 'Union' command in SolidWorks. Afterward, add fillets and chamfers as needed for smooth edges. The vent attachment should fit snugly onto the refrigerator without obstructing airflow or compromising structural integrity. To refine your design further, consider adding features such as a hinge system that facilitates easy opening and closing of the lid. This can be achieved by incorporating a revolved surface or an extruded cut feature to create the necessary components for the hinges.