I am needing to build an electromagnet that will sit around part of a torus. In your opinion would I be better off just using wire to wind my own electromagnet or making bitter plates that make an electromagnet? I realise this might sounds crazy but I need to build a very powerful electromagnet. If the bitter magnet would be better this won't be a problem. Im nearing the finish of building my own cnc machine and could build my own mould to form the plates. Any help would be greatly appreciated.