import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-14,0))
r=w0.sketch().arc((15,33),(14,42),(16,50)).arc((12,42),(15,33)).assemble().finalize().extrude(8).union(w0.sketch().segment((-21,-7),(-19,-41)).segment((-18,-50)).segment((21,-47)).segment((18,-4)).close().assemble().finalize().extrude(29))