import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-72,0))
r=w0.workplane(offset=98/2).moveTo(38,13.5).box(124,5,98).union(w0.sketch().arc((-100,17),(-58,-4),(-80,-46)).arc((11,17),(-100,17)).assemble().reset().face(w0.sketch().segment((-43,43),(-36,43)).arc((-31,40),(-26,43)).segment((-18,43)).segment((-18,48)).segment((-26,48)).arc((-31,51),(-36,48)).segment((-43,48)).close().assemble(),mode='s').finalize().extrude(144))