import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,45))
r=w0.sketch().arc((-65,-29),(-63,-71),(-26,-52)).arc((29,90),(-65,-29)).assemble().finalize().extrude(-90).union(w0.sketch().arc((-10,50),(17,-100),(15,52)).segment((14,47)).close().assemble().finalize().extrude(-48))