t = 7;
w = 30;
h = 47.7;
rc = 6.5;
rcs = 2;
ofs = 88.1-w;

$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
}

difference(){
    hull(){
        translate([w-rc, rc])cylinder(h=t, r=rc);
        translate([w-rc,h-rc])cylinder(h=t, r=rc);
        translate([rcs, h-rcs])cylinder(h=t, r=rcs);
        translate([rcs, rcs])cylinder(h=t, r=rcs);
    }
    translate([72.2-ofs, h-14.75])through(l=t);
    translate([72.2-ofs, h-39.9])through(l=t);
    translate([82.1-ofs, h-6.65])through(l=t+4);
    translate([82.1-ofs, h-6.65-14])m3();
    translate([w-7, h-24-14,-1])hull(){
        translate([7,0])cube([1,14, t+2]);
        translate([3,3])cylinder(h=t+2,r=3);
        translate([3,11])cylinder(h=t+2,r=3);
    }
    translate([-1,h-19.5-31,-1])hull(){
        cube([0.01,33,t+2]);
        translate([5,3])cylinder(h=t+2,r=3);
        translate([5,30])cylinder(h=t+2,r=3);
    }
    
    for(x=[72.6-ofs]){
        for(y=[33.4]){
            translate([x,h-y,0])m3();
        }
    }    
    for(x=[64.6-ofs]){
        for(y=[11.4]){
            translate([x,h-y,0])m3();
        }
    }    
}