Just for the fun of it, I continued the research for building slices from a model. I wasn't really happy with the netfabb answer, as it's very expensive to have that one feature. I have located a free program, commonly used by many in the world of 3d, meshmixer from autocad.http://www.meshmixer.com/download.html
One feature that caught my eye is listed as a new function of the program, the ability to slice a 3d model. I downloaded and installed the program, then loaded in a sample model from .obj (import) and used the Edit, Make Slices function. Playing around with that feature alone makes it worth the download. One can set the direction of slices, the thickness of the slice and see a preview of how the model appears when sliced. Performing the action then presents a list of .obj files, one for each slice. Select the slice you desire, click Export, select the format, and you have the output you desire/require.
This may be your best option and it was easy enough to figure out in a matter of minutes.