pipe cutting edge tool

V. 01Openscad$fn=360;difference(){union(){translate([0,0,0.1])cylinder(h=70,d1=70,d2=10); translate([16,3.2,37]) rotate([0,-24,45]) cube([5,20,70],center=true);}union(){cylinder(h=60,d=17);cylinder(h=55,d=21);cylinder(h=50,d=26);cylinder(h=42,d=33);cylinder(h=32,d=42);cylinder(h=20,d=52);}translate([20,5,40]) rotate([0,-24,45]) cube([5,20,70],center=true);translate([0,0,70]) cylinder(h=5,d=40,center=true);}