import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,8))
r=w0.sketch().segment((-50,-8),(-38,-38)).segment((-11,-27)).segment((-11,-31)).segment((2,-31)).arc((22,-39),(42,-31)).segment((45,-31)).segment((45,-28)).arc((50,-11),(45,5)).segment((45,8)).segment((42,8)).arc((33,14),(23,17)).arc((-4,38),(-16,6)).close().assemble().push([(2,18)]).circle(12,mode='s').finalize().extrude(-16)