$fn = 64;

distance = 27;
height = 7;
points = 3;
angle = 360/points;
nut_width = 14.12;

module fhex_nut(wid, h){
    translate([0,0, h/2])
        hull(){
            cube([wid/1.7, wid, h], center=true);
            rotate([0,0,120]) cube([wid/1.7, wid, h], center=true);
            rotate([0,0,240]) cube([wid/1.7, wid, h], center=true);
        }
}

module middle(distance, angle, nut, h){
    rotate([0,0,angle])
    translate([0, distance, 0]){
        difference(){
            cylinder(r=22.5/2, h=height);
            fhex_nut(nut, h);
        }
    }
}

union(){
    import("/home/manus/Downloads/Triplex_Thingy.stl");
    for (a =[0:points-1])
        middle(distance, angle*a, nut_width, height);
}