import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,5))
w1=cq.Workplane('XY',origin=(0,0,12))
r=w0.sketch().segment((-100,-24),(-21,-43)).segment((-12,-4)).segment((-90,15)).close().assemble().finalize().extrude(-2).union(w0.sketch().segment((48,-40),(83,-40)).segment((83,-28)).arc((100,2),(83,31)).segment((83,43)).segment((48,43)).segment((48,31)).arc((31,2),(48,-28)).close().assemble().finalize().extrude(9)).union(w1.sketch().push([(66,2)]).circle(4).push([(65,1)]).circle(2,mode='s').finalize().extrude(-26))