Here is a quick little video that shows the direct metal casting capabilities of a Z Corporation rapid-printed mold. These molds are made of a mixture of foundry sand, plaster and other additives that useful for non-ferrous casting of metal parts. These molds are strong enough to handle the melt temperatures associated with non-ferrous casting.
I think this is a great adaptation of 3D printing to produce actual working parts from CAD data. It’s too bad that ferrous casting isn’t currently offered by their technology. I’m looking for case studies on this subject, please write us if you have any firsthand expperience.