A Fillet is the curved juncture of two surfaces
that would otherwise meet at a sharp corner or edge. While
modeling a part all sharp corners and edges should be filleted.
As can be seen in the example before and after animation to the
right, all sharp corners and edges have been filleted, including
even the smallest corner features. However one edge around the
perimeter of the part has been left sharp, this is the parting line
of the part which will be discussed in the “Parting Line” module up next.
