import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-6,0))
w1=cq.Workplane('XY',origin=(0,0,-24))
r=w0.sketch().push([(-26,-11)]).circle(21).push([(21,24)]).circle(26).finalize().extrude(-10).union(w1.sketch().arc((-40,25),(-49,-2),(-25,-18)).arc((3,-18),(-2,9)).arc((-5,7),(-9,5)).arc((-33,-10),(-38,17)).arc((-40,21),(-40,25)).assemble().reset().face(w1.sketch().segment((-11,-13),(-3,-13)).segment((-3,-2)).arc((-6,-8),(-11,-13)).assemble(),mode='s').finalize().extrude(39))