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Click the Z-axis on the compass in the bottom left corner of the screen to look at only the XY-plane. Right click in the empty white space and choose Select New Sketch Plane so that the plane we are sketching on will be on the XY-plane, then click on the grid that appears. Next, select the Line tool and, beginning at the origin, make a 8-inch line going in the positive Y direction.  Then, starting at the top of the newly-created line, create another line in the positive X direction for 1 inch.  You can enter the dimensions directly by pressing the spacebar and typing the numbers.

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Make another line on the positive X-axis, starting from the origin, for 4 inches, and then another 4 inches in the positive Y direction from the right end of the previous line.

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In order to get a fillet edge where these two lines intersect, first we need to intersect them. Create lines starting from the open points of the sketch and allow them to intersect; the lengths  the lines are arbitrary as long as they cross.

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Next, trim the extra lines using the Trim Away tool.

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Lastly, use the Create Rounded Corner tool to make a fillet edge between the new corner. Click the vertical line and hover the mouse of the horizontal line then press 1 to create the radius of 1 inch. The Model Editor will display 2.0 in while in sketch mode but when 3D will truly be 1.0 in. The problem specified its radius to be 1 inch. The Create Rounded Corner tool is selected in the Sketch section of the toolbar in the picture below.

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In order to convert this sketch into the stepped shaft that is required, it must be rotated around the Y axis. Since the sketch is now complete, select the Pull tool in the Edit section of the toolbar. Utilize the Revolve feature by picking the Y axis to rotate about.  Rotate the view slightly to see the yellow, curved arrow, then drag with your mouse to pull the sketch around the Y axis.  Press the spacebar and enter “90deg” to achieve the precise rotation needed. It should look like the object in the picture below.

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Click in a blank spot of the model window, or press the Esc key on your keyboard, to complete the Pull operation.

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