import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,33))
w1=cq.Workplane('YZ',origin=(27,0,0))
r=w0.sketch().segment((-58,-26),(-56,-26)).arc((-57,-23),(-58,-19)).close().assemble().finalize().extrude(-99).union(w0.workplane(offset=-12/2).moveTo(0,-10).cylinder(12,86)).union(w0.workplane(offset=33/2).moveTo(0,-9.5).box(40,181,33)).union(w1.sketch().segment((79,-58),(100,-58)).segment((100,-37)).arc((90,-38),(79,-37)).close().assemble().finalize().extrude(-47))