November 3, 2014 at 2:48 pm #21979
First, begin with the shape that you want to draw (the annulus).
Duplicate the shape, so that you have a copy of it that can be used to draw the two circles.
Draw a very thin rectangle that cuts overlaps both the inside of the shape and the outside of the shape. (Look at the picture in the docs; where the thin rectangle is drawn.)
Subtract that rectangle from one of your annuli, and apply the hatches to the resulting shape.