A method of manufacture of a net form product, including directing a stream of liquid from a nozzle onto a collector of the shape of the desired product, applying a disturbance to the stream, preferably an amplitude modulated disturbance, to produce a droplet stream, and with the nozzle and collector...http://www.google.com.au/patents/US5259593?utm_source=gb-gplus-sharePatent US5259593 - Apparatus for droplet stream manufacturing