Here is the Tutorial.
Start SolidWorks in Part mode.
Front Plane>>Sketch and make two circles.
Select the front face of the disc and then sketch.
Make a rectangle like this.
Extrude cut it from the disc.
Choose Circular pattern under features tab.
Select the circular edge as the pattern parameter and the cut-extrude1 as the feature to be patterned.
Click OK and here goes the cutter.