import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,-64))
r=w0.workplane(offset=69/2).moveTo(43.5,31.5).box(113,65,69).union(w0.sketch().segment((-77,0),(-77,13)).arc((-50,-63),(-59,17)).segment((-59,0)).close().assemble().push([(43,32)]).circle(12).finalize().extrude(128))