import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-19))
w1=cq.Workplane('XY',origin=(0,0,1))
r=w0.sketch().arc((29,-3),(-99,-26),(30,-14)).segment((98,-14)).segment((98,80)).segment((29,80)).close().assemble().finalize().extrude(-78).union(w1.workplane(offset=96/2).moveTo(63,33).cylinder(96,37))