
# Write the inner skull surface as an .obj file that can be imported by
# Blender.
mne.write_surface(op.join(conv_dir, 'inner_skull.obj'), coords, faces,
                  overwrite=True)

# Also convert the outer skull surface.
coords, faces = mne.read_surface(op.join(bem_dir, 'outer_skull.surf'))
mne.write_surface(op.join(conv_dir, 'outer_skull.obj'), coords, faces,
                  overwrite=True)