Taking its cues from computer-aided-design software, an extruder stacks thin layers of gooey thermoplastic that cure into shape.

FORBES: Almost Out of the Woods

Likewise Digital Equipment focused on its profit margin in computer-aided design and manufacturing software only to be destroyed by its lower margin but higher volume competitor AutoCad.

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Autodesk Inc. (NASDAQ: ADSK) makes computer-aided design (CAD) software used by architects, manufacturers, and engineers.

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