TABLE OF CONTENTS Many three-dimensional solid engineering models are created along a trajectory curve such as the radiator shown in Figure 10-43a, and other models are created using surface profiles, as the spur gear shown in Figure 10-43b.
Start a new file, "xxx_activity10-10." Make sure to check millimeters for the units in this file. Create the sketch as shown in Figure 10-44.
Create a circular sketch for the cross section of a swept solid body. The diameter of the circle is 6 mm. Place the circle such that it aligns with top end of the trajectory (Figure 10-45).
Insert => Sweep => Swept, or 
.When prompted for guide string 1, select the trajectory. Ignore the request for inputting guide string 2 by clicking OK. When prompted to select section string, select the circle. Ignore the request for inputting section string 2 by clicking OK.
In Swept, keep the default as shown in Figure 10-46.
Click OK to accept the default. When prompted to choose an orientation method, select Fixed (Figure 10-47).
In the following Swept dialogue window, select Constant and keep the default scale 1 (Figure 10-48).
Click OK to create the radiator. Insert => Offset/Scale => Hollow, select both open ends of the radiator and key in a thickness of the 0.5 mm to generate the final shape of the radiator.
Close => Save and Close.
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