thickness = 6; // The thickness of each length of plastic
width = 25; // The the total width of the hook
height = 150; // The total height of the hook
top_hang = 15;
top_curl = 30;
bottom_hang = 20;
bottom_curl = 25;

module length(size) {
    cube([width, thickness, size]);
}

module hook() {
    length(height);

    translate([0, 0, height - (thickness)])
    rotate([90, 0, 0])
    length(top_hang);

    translate([0, -top_hang - thickness, height - top_curl - thickness])
    length(top_curl + thickness);

    translate([0, bottom_hang + thickness, 0]) 
    rotate([90, 0, 0])
    length(bottom_hang);

    translate([0, bottom_hang + thickness])
    length(bottom_curl + thickness);
}

// It's best to print the hook lying on its side
// comment out these two lines to work with XYZ 
// relative to how it would actually bee hooked up
translate([0, 0, width])
rotate([0, 90, 0])
hook();