$fn = 40;
hub();
module hub(){
    
   difference(){
    union(){
translate([0,0,27.25])rotate([0,90,0])import("RIM.stl");
cylinder(d=60,h=10);
cylinder(d=20,h=23+3);
        
        for(i=[0:60:360])translate([38*cos(i),38*sin(i),0])
    difference(){cylinder(d=7,h=10);cylinder(d=4.5,h=60);}

translate([0,0,44])for(i=[0:60:360])translate([38*cos(i),38*sin(i),0])
    difference(){cylinder(d=7,h=10);cylinder(d=4.5,h=60);}
        
    }
    hex(4.7,8.4,23);
    cylinder(d=3,h=30);
}
}


    
module hex(side, width, height){
    hull(){
    translate([-width/2,-side/2,0])cube([width,side,height]);
    rotate([0,0,60])translate([-width/2,-side/2,0])cube([width,side,height]);
    rotate([0,0,120])translate([-width/2,-side/2,0])cube([width,side,height]);
    }
}