module dodecahedron(height) 
{
	scale([height,height,height]) 
	{
        intersection()
        {
			
			cube([2,2,1], center = true); 
            intersection_for(i=[0:4]) 
			{ 
				
                    rotate([0,0,72*i])
					rotate([116.56505,0,0])
					cube([2,2,1], center = true); 
			}
        }
    }
}

 module hohles()
{              
     cylinder(10,0.5,0.5,true,$fn=40);

     for(i=[0:4]) 
     { 
            rotate([0,0,72*i])
            rotate([116.56505,0,0])
            cylinder(10,0.5,0.5,true,$fn=40);
     }
 }

module hollow_dodecahedron()
{
    difference()
    {
        dodecahedron(2);
        hohles();
        sphere(0.95,true,$fn=50);                  
    }
}

module hollow_sphere()
{
    difference()
    {
        sphere(0.9,true,$fn=50);
        for(i=[0:4]) 
            { 
                rotate([0,0,72*i])
                rotate([116.56505,0,0])
                cylinder(10,0.3,0.5,true,$fn=40);
            }
        sphere(0.8,true,$fn=50);
    }
}

module Object(factor) 
{
	scale([factor,factor,factor]) 
	{
        union()
        {
            hollow_dodecahedron();
            hollow_sphere();
            sphere(0.7,true,$fn=50);
        }
    }
}
Object(1);