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How to make a sphere in Autodesk Inventor?

Tutorial by Manolis Theofilos
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As Doug said, revolving a half circle. (the tutorial was made in Inventor pro 2011 but it applies to all versions of Inventor

  1. Step 1:

    Next in the sketch environment draw a half circle. This can be done in various ways that all give the same result. In my case I draw a line and then by activating the line command again and holding the left mouse button I dragged one edge of the line to the other end. You could also draw a circle then a line from top to bottom (or left to right) and then trim the one half. Another way is to draw the line and then a 3 point arc using the center of the line as the arc's center and the two ends of the line as the other input points.

  2. Step 2:

    When you are done click finish sketch.

  3. Step 3:

    Then click Revolve in the Model Tab

  4. Step 4:

    The profile to be revolved should be automatically selected. If not click inside the half circle. Then you should choose an axis for the profile to be revolved.

  5. Step 5:

    Click on the line to select it as an axis and a preview of the revolved solid is displayed. By default full revolve is selected. You can choose an angle revolve or to another surface instead of full revolve

  6. Step 6:

    click ok and you are done!

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