import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-21))
r=w0.sketch().segment((45,30),(48,27)).segment((50,29)).segment((45,34)).close().assemble().finalize().extrude(1).union(w0.sketch().segment((-13,-3),(-10,-2)).arc((-45,-26),(-8,-7)).segment((-11,-8)).close().assemble().push([(-26.5,-16)]).rect(3,22,mode='s').finalize().extrude(42))