Then select one isopram on the handle and go to edit nurbs/detach surfaces. This will split surface from selected isopram. Delete lower part.

Create another curve, that will define profile of the handle.

Then rebuild it, and set spans to some number (I used 20). Then move vertices away from axis.

Then revolve that curve.

You can also create some spikes on top.

So that's it, you have nurbs axe.