t = 7;
w = 35;
h = 47.7;
rc = 6.5;
rcs = 2;

$fn = 100;

module through(l=7, lh=3.3, lt=1, lb=1){
    union(){
        translate([0,0,l-lh])cylinder(h=lh+lt, d=5.6);
        translate([0,0,-lb])cylinder(h=l+lh+lb, d=3.5);
    }
}

module m3 (h=8, lb=1){
    translate([0,0,-lb])cylinder(h+lb, d=2.5); // tapped M3
    //translate([0,0,-lb])cylinder(h+lb, d=4); // rutex insert
}

module m2 (h=8, lt=1){
    translate([0,0,-lt])cylinder(h, d=1.5); // tapped M3
    //translate([0,0,-lt])cylinder(h, d=3.2); // rutex insert
}

difference(){
    hull(){
        translate([rc, rc])cylinder(h=t, r=rc);
        translate([rc,h-rc])cylinder(h=t, r=rc);
        translate([w-rcs, h-rcs])cylinder(h=t, r=rcs);
        translate([w-rcs, rcs])cylinder(h=t, r=rcs);
    }
    translate([30.4, h-14.75])through(l=t);
    translate([13.2, h-33.7])through(l=t);
    translate([-1, h-24-14,-1])hull(){
        cube([1,14, t+2]);
        translate([5,3])cylinder(h=t+2,r=3);
        translate([5,11])cylinder(h=t+2,r=3);
    }
    translate([35,h-19.5-31,-1])hull(){
        translate([0,3])cylinder(h=t+2,r=3);
        translate([0,30])cylinder(h=t+2,r=3);
    }
    translate([12,h-12,-1])cylinder(h=t+2,d=5.5);
    translate([32.3,h-52.3,-1])cylinder(h=t+2,d=11);
    //fan shroud
    for(x=[24.6]){
        for(y=[23.4,43.7]){
            translate([x,h-y,0])m3();
        }
    }
    //cooling fan mount
    for(x=[24]){
        for(y=[33.7,11.7]){
            translate([x,h-y,0])m3();
        }
    }
    translate([10,0,t/2])rotate([-90,0,0])m2();
    //cooling fan duct
    //translate
}