The speedy new 3D printing technique replaces the traditional model building approach of painstakingly assembling cardboard, bits of wood, etc. with glue. Now HOK can produce models in hours instead of weeks, making their sales cycle just that much more nimble.
This continues a trend in which established businesses are discovering the potential of 3D printing. It's mainly for models, for certain, but in time the market will grow and we'll see many more interesting developments in the next few years.