This is a Chess set I created from a couple of designs (from the numerous that Man Ray designed in his lifetime) mainly to make the pieces easier to print.
They all print without support and no fill is required.
I found it best to print a set of Pawns and a set of Main pieces separately. Then if any piece doesn't print ok, you can go back and print individual items as needed.
Setting based on the superb modelling of http://www.thingiverse.com/RealAbsurdity/designs
layer thickness: .15mm (or less)
Number of shells: 2 or 3
feed speed: 80mm/s
travel speed: 150mm/s
fill rate: 0 (for shell version)