import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,17))
r=w0.sketch().segment((-47,9),(-17,-2)).segment((-17,-100)).segment((17,-100)).segment((17,-14)).segment((42,-23)).segment((47,-9)).segment((17,2)).segment((17,100)).segment((-17,100)).segment((-17,14)).segment((-42,23)).close().assemble().finalize().extrude(-34)