import cadquery as cq
w0=cq.Workplane('YZ',origin=(68,0,0))
r=w0.sketch().segment((-100,0),(-60,0)).arc((67,-65),(45,76)).segment((45,46)).segment((32,46)).segment((32,79)).arc((-29,63),(-60,9)).segment((-100,9)).close().assemble().finalize().extrude(-136)