difference(){
	union(){
		union(){
			difference(){
				union(){
					difference(){
						union(){
							difference(){
								//spiral 
									for ( z = [1:740]) {
									   rotate(z*2) translate([0,0,z*.1])  rotate([90,0,0]) cube(size = [12,7,1], center = false);
									}
							}
						}
						translate([-20,-20,0]) cube([60,60,5]);
					}

					difference(){
						union(){
							//top finishing flare
							for ( z = [0:50]) {
								rotate(740*2) translate([0,z*.5,((z+740)*.1)+(z*.1)]) rotate([90,0,0]) cube(size = [12,6,1], center = false);	
							}
						}
						//cutting the end on the flare
						rotate (45) translate([-40,10,75.02]) cube([60,60,20]);
					}
				}
			//top angle cube
			rotate([10,0,0]) translate([10,15,82.02]) cube([60,60,10], center = true);
			}

		}

		union(){
			//center cylinder
			translate([0,0,5])cylinder(h=700*.1+6,r=3,$fn=100);

			//rounded top
			translate([0,0,700*.1+11])sphere(r=3,$fn=100);
		}
	}
	//center hole
	translate([0,0,4])cylinder(h=700*.1+12,r=1,$fn=100);
}