Example of 2D to 3D Conversion

The original drawing is imported into a part document as Sketch1.

The sketch entities in the lower left corner become the Front view.

The top left becomes the Top view.

The lower right becomes the Right view.

The upper right is an Auxiliary view.

The Front view is at the lower left. The Top, Right, and Auxiliary views are folded perpendicular to the Front view.
An isometric view displays the orientation of the sketches.
Align the left edges of the Auxiliary and Top sketches, then the Right and Auxiliary sketches.
Extrude the base feature.
Cut or extrude other features. In this example, a round hole, a rectangular hole, and a rectangular notch are cut to complete the part.