maindia=150;
mainheight=3;
wall=1.26*3;
stick=8.95;
wallheight=20;
$fn=1000;
translate([0,0,0]){
    difference(){
        union(){
    cylinder(d=maindia,h=mainheight);
    translate([0,0,mainheight]){
        difference(){
            cylinder(d=maindia,h=wallheight);
             cylinder(d=maindia-wall,h=30);
        }
        cylinder(h=wallheight,r1=24,r2=15,center=false);
    }
    }
    
        //rotate([0, 180, 0]) 
        //    cylinder(h = 10, d1 = wall+stick+2, d2 = wall+stick);
        rotate([0, 0, 0])
            cylinder(h = 10, d=stick);
    }
}