When New York City tourists look up at the new One World Trade Center in Lower Manhattan, they may not know the story behind its spire top.

The 40-foot spire, which sits atop the 1,776-foot building — the tallest in the Western Hemisphere — was made by Kammetal workers, an architectural sheet metal company in the New York City borough of Brooklyn.

The glass-and-steel spire was cut using a TruLaser 1030 from Trumpf Inc. The manufacturer says the 2-D laser cutting machine offers an energy-efficient design ideal for smaller shops.

Trumpf provided an extra TruLaser 1030 to Kammetal when its shop was damaged by Hurricane Sandy.