import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,44))
r=w0.sketch().segment((-50,-47),(-11,-47)).segment((-12,12)).segment((-36,12)).arc((-42,1),(-50,-7)).close().assemble().push([(32.5,14)]).rect(35,66).finalize().extrude(-89)