union()
{
    difference()
    {
        //Nadwozie
        color("Red")
        difference()
        {

            cube([13, 30, 10]);
                translate([-1, 18, 10])
                    rotate([-30,0,0])
                        cube([30, 30, 10]);
        }

        rotate([0,90,0]) translate([-0.4, 4, -1])
        cylinder(r = 2.5, 22, $fn=200);

        rotate([0,90,0]) translate([-0.4, 24, -1])
        cylinder(r = 2.5, 22, $fn=200);
    }

    union()
    {
        rotate([0,90,0]) translate([-0.4, 4, -0.5])
        cylinder(r = 2, 2, $fn=200);

        rotate([0,90,0]) translate([-0.4, 24, -0.5])
        cylinder(r = 2, 2, $fn=200);

        rotate([0,90,0]) translate([-0.4, 4, 11.5])
        cylinder(r = 2, 2, $fn=200);

        rotate([0,90,0]) translate([-0.4, 24, 11.5])
        cylinder(r = 2, 2, $fn=200);

        rotate([0,90,0]) translate([-0.4, 24, 0])
        cylinder(r = 0.5, 12, $fn=200);

        rotate([0,90,0]) translate([-0.4, 4, 0])
        cylinder(r = 0.5, 12, $fn=200);
    }

    intersection()
    {
        translate([3, 29.6, 1.5])
        sphere(1, $fn = 200);

        translate([2, 28.3, 0.5])
        cube(2);
    }

    intersection()
    {
        translate([10, 29.6, 1.5])
        sphere(1, $fn = 200);

        translate([9, 28.3, 0.5])
        cube(2);
    }
}