| import cadquery as cq | |
| w0=cq.Workplane('ZX',origin=(0,35,0)) | |
| r=w0.workplane(offset=-70/2).moveTo(12,-48).cylinder(70,2).union(w0.sketch().segment((-41,-11),(39,-13)).segment((41,48)).segment((-39,50)).close().assemble().push([(0,18)]).circle(17,mode='s').finalize().extrude(-42)) |