import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-4))
w1=cq.Workplane('ZX',origin=(0,0,0))
r=w0.sketch().segment((-31,24),(-17,9)).segment((-17,-3)).segment((-11,-3)).segment((-11,9)).segment((-16,9)).segment((10,35)).segment((-5,50)).close().assemble().push([(-13,0)]).circle(1,mode='s').finalize().extrude(-6).union(w0.workplane(offset=41/2).moveTo(36,-29).box(10,42,41)).union(w0.sketch().push([(24,26)]).circle(21).reset().face(w0.sketch().segment((19,34),(20,18)).segment((30,19)).segment((29,35)).close().assemble(),mode='s').finalize().extrude(45)).union(w1.workplane(offset=-29/2).moveTo(-22,-27).cylinder(29,18))