Thanks for your response alansimpson, but in terms of rapid prototyping, for metals the cost would be excessive (if thats what you are suggesting), irrespective of quantities for production.
Thanks as well ajack1. It really sounds like you have a good deal of experience with applications such as this. It would be great if you could point me in the right direction as to what companies would be able to produce the pressings (I have had no luck so far). I understand your concerns with ethics, but here is my understanding of such a problem. Naming companies that may be able to offer a service should be ok (I've done it and many other people have done this), but the use of this website to promote or market a company or service is not. Where do you draw the line... I don't know. It would be good if someone could clear this up. If you know of a website that I could look at, to see what is available and who may offer a feasible solution to the manufacturing, it would be great if you could post a link. Thanks for your help.