code: def get_cutout(self, clearance=0):
          " get the cutout for the shaft"
          return cq.Workplane('XY', origin=(0, 0, 0)) \
              .circle((self.diam / 2) + clearance) \
              .extrude(10f get_cutout(self, clearance=0):
          " get the cutout for the shaft"
          return cq.Workplane('XY', origin=(0, 0, 0)) \
              .circle((self.diam / 2) + clearance) \
              .extrude(10)
docs: get the cutout for the shaft