$fn = 50;

//difference() { union() {

difference() {
  cylinder(r=4, h=4*8);
  ball_end_n();
  translate([0, 0, 6]) cylinder(r=3.2, h=4*8);
  translate([-5, -0.5, 4*8-6]) cube(size=[10, 1, 3], center=false);
}

color([1, 0.5, 0.5]) translate([0, 0, 6*8]) rotate([180, 0, 0])
{
  difference() {
    union() {
      cylinder(r=3, h=3*8);
      cylinder(r=4, h=8);
    }
    translate([-5, -0.7, 14-3]) cube(size=[10, 1.4, 8+3], center=false);
    ball_end_n();
  }
}

//rotate([90, 0, 0])
color([0.5, 0.5, 1]) translate([-4, -0.5, 4*8-6])
cube(size=[8, 1, 3], center=false);

// } translate([0, -50, -1]) cube(size=[10, 100, 50]); }

module ball_end() {
  difference() {
    ball_end_p();
    ball_end_n();
  }
}

module ball_end_p() {
  union() {
    translate([0, 0, 1.7+3.2+1-4]) difference() { sphere(r=4); translate([-5, -5, -6]) cube(size=[10,10,5]); }
    cylinder(r=4, h=2);
  }
}

module ball_end_n() {
  translate([0, 0, 1.7]) sphere(r=3.2);
  translate([0, 0, -0.1]) cylinder(r=2.9, h=2);
}