dishwasher-bushing.scad

//
// Dishwasher roller and bushing for dishtray rack
// 70's era General something something Electric 
//

washer_bushing_OD = 8.0;
washer_bushing_ID = 5.20;
wheel_radius_outer = 22.2;
wheel_radius_inner = 6;

//    translate([0,0,2.4/2])sphere(washer_bushing_OD/2.0,$fn=60);

module half_cylinder(high=1,rad=1,$fn=60,center=true){
    difference(){
      rotate([90,0,0])cylinder(h=high,r=rad,center=true);
      translate([0,0,-rad*5]) cube(rad*10,center=true);
    }
}

module half_sphere(radius=1,$fn=60){
    difference(){
      sphere(radius,center=true);
      translate([0,0,-radius*5]) cube(radius*10,center=true);
    }
}

module ring(){
  difference(){
  cylinder(h=19, r= wheel_radius_outer,$fn=68,center=true);
  cylinder(h=25, r= wheel_radius_inner,$fn=68,center=true);
  }
}

module shaping(){
union(){
translate([0,0,-6])cylinder(h=10,r1=wheel_radius_outer, r2=wheel_radius_inner, $fn=68,
center=true);
translate([0,0,10])cylinder(h=10, r= wheel_radius_outer*0.9, $fn=68, center=true);
}
}
// Bushing Part
difference(){
  difference(){
    union(){
      cylinder(h=18,r=washer_bushing_OD/2.0,$fn=68,center=true);
      translate([0,0,-9])cylinder(h=2, r1=washer_bushing_OD/2.0+1,r2=washer_bushing_OD/2.0,$fn=68,center=true);
    }
    cylinder(h=25,r=washer_bushing_ID/2.0,$fn=68,center=true);
  }
  translate([5,0,7.5])rotate([0,90,0])cylinder(h=10,r=2.80,$fn=68,center=true); 
}

// Wheel Part
//difference(){
//ring();
//shaping();
//}
// attempt at minkowski sum didn't go so well.  recompile?
//$fn=10;
//minkowski(){
//  sphere(r=10);
//  ring();
//}