To Create a Runner
Runners are assembly-level features used to distribute molten material to fill the mold or casting.
1. On the Mold or Cast tab, click 
Runner. The Runner dialog box opens.
Runner. The Runner dialog box opens.2. Specify a name for the runner at the prompt or accept the default name.
3. Select the shape of the runner from the Shape menu. Available runner shapes are as follows:
◦ Round
◦ Hexagon
◦ Half Round
◦ Trapezoid
◦ Round Trapezoid
4. Enter the dimensions that control the runner shape based on your selection above. For example, if you select a round trapezoid shape the system prompts:
"Enter runner diameter: "
"Enter runner angle: "
"Enter runner angle: "
5. Sketch the runner flow path.
6. Select the parts that the runner feature will intersect. This can be done automatically or manually.
7. If you want to modify the shape dimensions of the displayed flow path, select Segment Sizes from the Runner dialog box and click Define. Select an individual segment or a set of segments.
8. Click OK to create the runner feature.