i dont think the magnet will work, im pretty sure the heads are aluminum, and i dont think that sticks to magnets, i was thinking about using an air hose and try to blow as much out as possible, and that oil thing i cant see myself doing effectively. what about if i coat my tap in grease, so then as i cut, the shavings stick to the grease...could that work, and then maybe try the air hose one afterwards?