import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,13,0))
r=w0.sketch().segment((-50,11),(-33,-37)).segment((14,-21)).arc((50,-3),(14,15)).segment((8,31)).segment((-9,25)).arc((-16,37),(-14,23)).close().assemble().finalize().extrude(-26)