| import cadquery as cq | |
| w0=cq.Workplane('ZX',origin=(0,-5,0)) | |
| r=w0.sketch().arc((-40,-32),(-29,-15),(-9,-15)).arc((-39,4),(-40,-32)).assemble().push([(22,15)]).circle(28).finalize().extrude(-21).union(w0.workplane(offset=31/2).moveTo(-29.5,-39).box(15,8,31)) |