width=112;
height=31;

borderwidth=2.2;
$fn=100;

module body() {
    difference() {
    intersection() {
            cube([width,height,6]);
    translate([56, height/2, 0]) cylinder(d=112, h=6);
    }

    translate([2.2,2.2,2]) cube([width-2.2*2, height-2.2*2, 4]);
}

translate([borderwidth-0.75,16.3,0]) cube([4.5,7,16]);
translate([width - 4.5 - borderwidth + .75,16.3,0]) cube([4.5,7,16]);

translate([10,2.2-0.7,6]) cube([90, 0.7, 2.5]);
translate([10,31-2.2,6]) cube([90, 0.7, 2.5]);

// 3 round holders in middle
translate([11.75 - 4.15/2, 18.4, 0]) holecylinder();
translate([44.6 - 4.15/2, 9.5 - 4.15/2, 0]) holecylinder();

translate([width- 20 + 4.15, height - 8.10 + 4.15/2, 0]) holecylinder();
}

module holecylinder() {
    difference() {
        rotate([0,0,45]) cylinder(h=14.3, d=4.15 * sqrt(2), $fn=4);
        translate([0,0,14.3-7]) cylinder(h=7, d=2);
    }
}

difference() {
    body();
    translate([15.25,height-3.25-11.3,0]) cube([9.3,11.3,5]);
    translate([36.25,height-7-7.5,0]) cube([3.7, 8.5, 5]);
    
    translate([width - 10 - 15.75, height-10.75-8, 0]) cube([15.75, 8,5]);
    translate([width-40.25 + 1.5, height-15.75, 0]) cylinder(d=3.5, h=5);
    
    // holes
    translate([0,16.3 + 7/2,11.6]) rotate([0, 90, 0]) cylinder(h=10, d=1);
    #translate([width - 10,16.3 + 7/2,11.6]) rotate([0, 90, 0]) cylinder(h=10, d=1);
}