import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-5))
r=w0.sketch().segment((-66,-85),(-58,-100)).segment((-30,-85)).close().assemble().push([(27,31.5)]).rect(66,59).finalize().extrude(5).union(w0.sketch().segment((-24,42),(-13,42)).arc((5,36),(24,42)).segment((66,42)).segment((66,91)).segment((51,91)).segment((51,55)).segment((-3,55)).segment((-3,100)).arc((-11,97),(-18,91)).segment((-24,91)).segment((-24,83)).arc((-27,68),(-24,54)).close().assemble().finalize().extrude(11))