This is aa aluminum piece I use as an original from which to cast a little keeper bar from polyurethane resin. The keeper bar holds eight neodymium magnets and makes the core of a bass pickup I've been working on. BTW, I carved this little guy by hand using a hacksaw, drill press and a flat bastard mill file. #madscientist #guitarpickups #basspickups #handwoundpickups #winding #funktronicpickups