import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-19,0))
r=w0.sketch().segment((-50,23),(-28,-16)).segment((-21,-12)).arc((3,-8),(1,17)).segment((2,21)).segment((5,25)).segment((3,26)).segment((7,44)).segment((-3,46)).segment((-6,32)).segment((-7,33)).segment((-9,29)).segment((-7,28)).segment((-9,21)).arc((-18,20),(-25,16)).segment((-34,32)).close().assemble().finalize().extrude(5).union(w0.workplane(offset=29/2).moveTo(19.5,-28.5).box(27,35,29)).union(w0.sketch().arc((3,6),(12,7),(7,15)).arc((-1,14),(3,6)).assemble().push([(32,-1)]).circle(18).finalize().extrude(39))