Very clever. Although I do, most won't have the ability to cast. The cord depth isn't deep. I wonder how well the piece would work if you were to dress the approximate contour with with a file, then lap it against the spindle with very fine (read "thin") sandpaper, and finally cut a relief along the axial center about 1/2" wide x .005" deep? Maybe rather than the contour of the spindle, just file a "vee" that's almost flat having an included angle of contact of perhaps 165-degrees...?