import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,8))
r=w0.sketch().push([(-47,-29)]).circle(27).circle(2,mode='s').finalize().extrude(-55).union(w0.sketch().segment((-100,-20),(-42,-83)).segment((7,-38)).segment((-17,-13)).segment((0,-13)).segment((61,-51)).segment((100,12)).segment((75,27)).segment((75,45)).segment((47,45)).segment((-13,83)).segment((-51,24)).segment((-51,25)).close().assemble().reset().face(w0.sketch().segment((-53,-29),(-41,-32)).segment((-40,-29)).segment((-53,-27)).close().assemble(),mode='s').reset().face(w0.sketch().segment((-40,13),(-28,0)).segment((-28,5)).close().assemble(),mode='s').finalize().extrude(38))