sw_w=10.5;
sw_t=6;
sw_l=20;
sw_clearance=1;
sw_hole_dist=10;
sw_hole_dia=2;
mt=2;
tab_w=20;
tab_h=4;
tab_d=10;
$fn=20;
offset=0.4;

module switch(){
    difference(){
        cube([sw_w,sw_t,sw_l]);
        rotate([90,0,0]){
            translate([sw_w/4,sw_l/2-sw_hole_dist/2,-sw_t])cylinder(d=sw_hole_dia,h=sw_t);
            translate([sw_w/4,sw_l/2+sw_hole_dist/2,-sw_t])cylinder(d=sw_hole_dia,h=sw_t);
        }
    }
}


module tab(){
    union(){
        cube([tab_d,tab_w,tab_h]);
        translate([-tab_d,-tab_w/2,0])cube([tab_d,tab_w*2,tab_h]);
    }
}

module bracket(){
//switch baseplate
difference(){
    cube([sw_w/2,mt,sw_l]);
    rotate([90,0,0]){
            translate([sw_w/4,sw_l/2-sw_hole_dist/2,-sw_t])cylinder(d=sw_hole_dia,h=sw_t);
            translate([sw_w/4,sw_l/2+sw_hole_dist/2,-sw_t])cylinder(d=sw_hole_dia,h=sw_t);
    }
}
// tab_clamp
translate([tab_d/2,-tab_h,-mt]){
difference(){
    translate([0,-offset,0])cube([mt,tab_h+mt+offset,tab_w+2*mt]);
    translate([0,tab_h,mt])rotate([90,0,0])tab();
    }
}
}
   
module extender(){
    difference(){
        cube([sw_l,sw_w*3,mt]);
        rotate([0,0,-90]){
            hull(){
                translate([-(sw_w*3/2)*0.25,sw_l/2-sw_hole_dist/2,0])#cylinder(d=sw_hole_dia,h=mt);
                translate([-(sw_w*3/2)*1.75,sw_l/2-sw_hole_dist/2,0])#cylinder(d=sw_hole_dia,h=mt);
            }
            hull(){
                translate([-(sw_w*3/2)*0.25,sw_l/2+sw_hole_dist/2,0])#cylinder(d=sw_hole_dia,h=mt);
                translate([-(sw_w*3/2)*1.75,sw_l/2+sw_hole_dist/2,0])#cylinder(d=sw_hole_dia,h=mt);
            }
        }
    }
}
translate([-tab_d/2,0,tab_h+mt])rotate([90,0,0])%switch();
translate([0,-tab_w,0])%tab();
translate([-tab_d/2,0,tab_h])rotate([90,0,0])bracket();
//rotate([0,0,90])translate([-2*sw_w+mt/2,-sw_w*3/2,tab_h])extender();