import cadquery as cq
w0=cq.Workplane('XY',origin=(0,0,12))
w1=cq.Workplane('ZX',origin=(0,21,0))
r=w0.sketch().segment((-87,-18),(-2,-18)).segment((-2,-10)).arc((18,0),(-2,9)).segment((-2,55)).segment((-87,55)).close().assemble().push([(-44,18.5)]).rect(52,35,mode='s').finalize().extrude(-79).union(w0.sketch().segment((98,-7),(100,-6)).segment((98,-4)).close().assemble().finalize().extrude(61)).union(w1.workplane(offset=-76/2).moveTo(-55,-75).box(36,50,76))