| import cadquery as cq | |
| w0=cq.Workplane('ZX',origin=(0,-27,0)) | |
| r=w0.sketch().arc((-1,-24),(20,-7),(47,-13)).arc((11,32),(-1,-24)).assemble().finalize().extrude(52).union(w0.sketch().push([(-30,-13)]).circle(20).circle(8,mode='s').finalize().extrude(54)) |