import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-30,0))
r=w0.sketch().push([(-79,-2)]).circle(21).reset().face(w0.sketch().segment((16,56),(59,-14)).arc((51,-37),(67,-55)).segment((67,-56)).segment((69,-56)).arc((75,-57),(82,-56)).segment((84,-56)).segment((84,-55)).arc((100,-32),(84,-9)).segment((82,-9)).arc((75,-8),(69,-9)).segment((67,-9)).segment((61,-13)).segment((18,57)).close().assemble()).finalize().extrude(60)