import cadquery as cq
w0=cq.Workplane('YZ',origin=(-45,0,0))
w1=cq.Workplane('YZ',origin=(-42,0,0))
r=w0.workplane(offset=90/2).moveTo(-45.5,-71.5).box(109,45,90).union(w0.sketch().segment((-11,-63),(97,-63)).segment((97,38)).segment((73,38)).segment((74,75)).segment((55,75)).segment((55,94)).segment((49,94)).segment((49,75)).segment((31,76)).segment((30,38)).segment((-11,38)).close().assemble().push([(52,47)]).circle(20,mode='s').finalize().extrude(91)).union(w1.sketch().arc((96,-54),(100,-38),(96,-22)).close().assemble().finalize().extrude(88))