Create six tall cylinder extrusions with cuts and fillets evenly spaced about the central axis of the part using the Circular Pattern tool.
Click View, Temporary Axes.
This shows all of the system-generated axes in the part. You select one as the central axis of the pattern.
In the PropertyManager, under Parameters:
Select the temporary axis in the center of the part for Pattern Axis.
Select Equal
spacing to pattern the number
of instances uniformly around the axis within 360
Set Number
of Instances
to 6.
Click in Features
to Pattern
.
In the flyout FeatureManager design tree in the graphics area, select the last three features (Fillet, Cut-Extrude, and Extrude).

Click
.