// OpenSCAD Mailinglist CC0
// Y-adapter for table saw and vacuum cleaner

wall_thickness=1;
y_adapter_in_diameter=20;
y_adapter_out_bigger=15;
y_adapter_out_smaller=10;
adapter_length=70;
adapter_small_exhaust_length=30;


difference(){
  // the outer shape adds up, it is a cone and a cylinder added together
  union() {
    // main cone
    cylinder(d1=y_adapter_in_diameter,d2=y_adapter_out_bigger, h=adapter_length, center=true);
    // side cylinder
    rotate([0,90,0]) cylinder(d=y_adapter_out_smaller,h=adapter_small_exhaust_length);
  }
  // hollow main cone
  cylinder(d1=y_adapter_in_diameter-2*wall_thickness,d2=y_adapter_out_bigger-2*wall_thickness, h=adapter_length, center=true);
  // hollow side cylinder
  rotate([0,90,0]) cylinder(d=y_adapter_out_smaller-2*wall_thickness,h=adapter_small_exhaust_length); 
}