import cadquery as cq
w0=cq.Workplane('ZX',origin=(0,-50,0))
r=w0.sketch().segment((-42,6),(-1,6)).segment((0,-21)).segment((8,-21)).segment((8,-46)).arc((10,-45),(12,-45)).arc((19,-31),(34,-34)).arc((39,-29),(42,-24)).arc((9,0),(40,27)).arc((-8,44),(-42,6)).assemble().finalize().extrude(100)