Step by step
Open up a new IPT file,
Use Line tool and draw a straight vertical line
Draw another line, this one horizontal
At the end point of the second line, draw a circle with the correct diameter
When in the model mode, press the coil feature
Here, choose the axis line and the rotation.
Axis line is the vertical line that we draw first. (The red line)
Choose the type, i choose Revolution and Height in this case
Add the values on, revolution and height.