Double Helix with a sphere

I made this while working on OpenSCAD and testing out the abilities of the Marketbot 2.

Here is the code to make it in OpenSCAD

module bar(){
cube([100,4,1], center=true);
translate([50,0,0])
cylinder(r=3, h=1, center=true);
translate([-50,0,0])
cylinder(r=3, h=1,center=true);
}
;


difference(){
union(){
for (i = [0:360])
{
rotate([0,0,i])
translate([0,0,i])
color([.5,0,0])
bar();


}
for (i = [0:360])
{
rotate