30mm Flagstone Bases

These are my initial designs for some 30mm bases. I will be using these for basing some Warmhordes light infantry. I figured others might like to use them, so here they are!

The bases tend to be slightly smaller in the center (along the Z axis) so it might be better to print with 50% or more infill or 5+ shells to allow the base to retain it's size/shape and prevent shrinkage in the middle of the print. (Final image shows this shape loss in detail).

Another idea I have to possibly solve this irregularity and prevent any arguments over bases not being the right size (most likely from picky fellow players) is to make them slightly smaller so as to have them fit into the indentations of the genuine bases from PP, thus retaining a perfect base perimeter. I am, however, worried that may result in too little space for detail on the actual model since the piece will end up so small.

If anybody else has any ideas, please feel free to share them!

EDIT

(Farnsworth voice) Good news everyone! Increasing the infill to 50% (I use rectilinear) and at least 5 perimeters ensures that there is no distortion of the base after it cools!

Happy printing, and please share your results if you print them.