AUBURN, Wash. -- In an Auburn warehouse, ExOne demonstrates its $1.5 million 3D printer in action.

ExOne general manager Sean Sutterfield shows us how it works, using sand as its building material.

They start by loading a digital design of a product into their computer. The printer alternates laying down the thinnest layers of sand with a material that will hold the grains together to make a three dimensional print of the product.

The company, which held its ribbon cutting Wednesday night, makes molds for foundries.

Its 3D printers can create intricate designs that can be time consuming for traditional methods.

Their products are already in use by the military and car manufacturers, and now they're taking aim at the aerospace industry.

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