// PRUSA iteration4
// Z screw cover
// GNU GPL v3
// Josef Průša <iam@josefprusa.cz> and contributors
// http://www.reprap.org/wiki/Prusa_Mendel
// http://prusamendel.org

translate(v = [-4.2, 0, 4.3]) rotate([0, 90, 0]) cylinder(r1 = 0.6, r2 = 0.4, h = 1, $fn = 60);
translate(v = [4.2, 0, 4.3]) rotate([0, -90, 0]) cylinder(r1 = 0.6, r2 = 0.4, h = 1, $fn = 60);
translate(v = [0, 4.2, 4.3]) rotate([90, 0, 0]) cylinder(r1 = 0.6, r2 = 0.4, h = 1, $fn = 60);
translate(v = [0, -4.2, 4.3]) rotate([-90, 0, 0]) cylinder(r1 = 0.6, r2 = 0.4, h = 1, $fn = 60);

translate(v = [-4.2, 0.5, 4.0]) rotate([0, 90, 0]) cylinder(r1 = 0.6, r2 = 0.3, h = 0.8, $fn = 60);
translate(v = [4.2, -0.5, 4.0]) rotate([0, -90, 0]) cylinder(r1 = 0.6, r2 = 0.3, h = 0.8, $fn = 60);
translate(v = [0.5, 4.2, 4.0]) rotate([90, 0, 0]) cylinder(r1 = 0.6, r2 = 0.3, h = 0.8, $fn = 60);
translate(v = [-0.5, -4.2, 4.0]) rotate([-90, 0, 0]) cylinder(r1 = 0.6, r2 = 0.3, h = 0.8, $fn = 60);

translate(v = [-4.2, 1, 3.7]) rotate([0, 90, 0]) cylinder(r1 = 0.5, r2 = 0.3, h = 0.6, $fn = 60);
translate(v = [4.2, -1, 3.7]) rotate([0, -90, 0]) cylinder(r1 = 0.5, r2 = 0.3, h = 0.6, $fn = 60);
translate(v = [1, 4.2, 3.7]) rotate([90, 0, 0]) cylinder(r1 = 0.5, r2 = 0.3, h = 0.6, $fn = 60);
translate(v = [-1, -4.2, 3.7]) rotate([-90, 0, 0]) cylinder(r1 = 0.5, r2 = 0.3, h = 0.6, $fn = 60);

difference()
{
    union()
    {
        translate(v = [0, 0, 1]) cylinder(r1 = 8, r2 = 4.6, h = 4);
        cylinder(r = 8, h = 1, $fn = 60);
    }
    translate(v = [0, 0, -1]) cylinder(r = 4.2, h = 7, $fn = 60);
    cylinder(r1 = 4.5, r2 = 4.2, h = 1, $fn = 60);
}