Specifying an Independent Global Variable

By definition, the global variable for the pin shaft diameter depends on the dimension D1@sketch2.

Consequently, to update the dimensions that depend on the pin shaft diameter, you must change the D1@Sketch2 sketch dimension value. Next, you make the pin shaft diameter independent of the dimension D1@Sketch2, and you define a separate equation for D1@Sketch2.
  1. In the Equation View of the Equations, Global Variables, and Dimensions dialog box, under Global Variables, click the Value / Equation column for "Pin Shaft Diameter" and enter .47in.
    The value .47in is arbitrary. You can enter any value that does not depend on the existing dimensions.
  2. If an error dialog box appears because the pin shaft diameter dimension, D1@Sketch2 is not yet defined, click Close to dismiss the dialog box.
  3. Under Equations, click the next blank cell and enter an equation for the pin shaft diameter dimension, D1@Sketch2:
    "D1@Sketch2" = "Pin Shaft Diameter".
    This equation links the sketch dimension to the global variable Pin Shaft Diameter.
    1. Enter "D1@Sketch2" in the Equations column.
    2. In the Value / Equation column, place the cursor to the right of the equal sign =, and click Global Variables > Pin Shaft Diameter.
    3. Press Tab.
    You have defined the global variable for the pin shaft diameter as an independent variable. To modify the size of the pin shaft diameter and the other dimensions that depend on it, you can enter a different value for the "Pin Shaft Diameter" global variable in the Value / Equation column.