| import cadquery as cq | |
| w0=cq.Workplane('YZ',origin=(18,0,0)) | |
| r=w0.sketch().segment((-28,9),(-21,9)).arc((0,-50),(21,9)).segment((30,9)).segment((30,50)).segment((-28,50)).close().assemble().push([(23.5,41)]).rect(9,12,mode='s').finalize().extrude(-46).union(w0.sketch().push([(1,29)]).circle(3).circle(2,mode='s').finalize().extrude(9)) |