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Michael Moore
05-31-2008, 05:20 PM
http://www.mitsubishi-motors.com/corporate/about_us/technology/review/e/pdf/2002/14E_09.pdf

I found this an interesting article and thought I'd share it.

cheers,
Michael

Scishopguy
05-31-2008, 05:51 PM
Michael....There was a segment on that "How It's Made" show on the Science Channel that shows how complicated parts are cast. They used ceramic slip to coat the wax mold forms and then fired them to bisque stage, which removed the wax and preheated the forms so that there would be no thermal shock when poured. Once the metal was poured and they hardened sufficiently to be moved, they were dumped in a vibratory tumbler with steel shot to break up the ceramic and remove any flash. The whole thing was very interesting and informative. That is always an interesting little show. They even had one on making end mills.

Michael Moore
06-02-2008, 05:57 PM
http://www.engineersedge.com/investment_casting_article.htm

is another paper on the benefits of using RP instead of traditional patterns. It talks about using different kinds of waxes for the main pattern and the cores, with the core wax being removed by an acid after the other wax has been formed around it.

cheers,
Michael

John Stevenson
06-02-2008, 06:09 PM
Michael,
You posted the same link twice.

.

Michael Moore
06-02-2008, 06:26 PM
Would you believe that I thought it was so good it deserved being posted twice?

I didn't think you would. :D So I've edited the post to add the correct link.

cheers,
Michael