Strange Bowl: 16 washers

The area between y=x and y=x^2 is rotated about the line y=1.25. This creates a volume of revolution which looks a bit like a bowl, but with a conical interior and a big hole in the bottom. This volume is approximated by 16 washer shapes. Note that the 16th washer does not appear on the model. (Near the bottom of the bowl, the shape is so flat that the washer is disconnected from the others.)

This model pairs with Strange Bowl: smooth & 16 shells (http://www.thingiverse.com/thing:922306 and