Sketching a Hole
Create a circle for the center hole
Click Extruded Cut on the Features toolbar
Select the top face of the part
Click Top on the Standard Views toolbar
Click Circle on the Sketch toolbar
Move the pointer over the origin.The pointer changes to
Click to place the center of the circle
Move the pointer to create the circle.
Click to finish the circle and click OK in the PropertyManager
Dimensioning the Hole Sketch
Click Smart Dimension on the Sketch toolbar
Select the circle.3.Move the pointer and click to place the dimension
In the Modify box, type 25, then click OK and click in the graphics area
Creating a Hole
click exit sketch
click trimetric
in the propertymanager, under direction1, select through all for end condition
click OK.