Do you want to make perfect geometric shapes?
Download the Sauerbraten Marching Cubes algorithm. Generate all kinds of shapes. Use the Sauerbraten Marching Cubes exporter for Blender and import your Blender work into Sauerbraten. For more information see the Wiki It is all experimental.
Get it now
Or git clone it
$ git clone git://github.com/wrack/sauerbraten
$ cd sauerbraten/
$ git checkout marching-cubes
$ cd sauerbraten/
$ git checkout marching-cubes