Building a better boat

Associated Press

LITTLE FALLS, Minn. — It began as a vision, the idea of making fiberglass boats in a clean factory much faster than the traditional, labor-intensive method stuck in the 1950s.

The vision prompted Irwin Jacobs and his advisers at Genmar Holdings Inc., the nation’s second-largest powerboat maker, to buy a small Pennsylvania company that had developed a computer-controlled process for making fiberglass parts.

The Virtual Engineered Composites process is cleaner, stronger and cheaper than the old way, and lets Genmar make fiberglass boats much more quickly.

But that’s just the tip of the iceberg.

The chemical molding system is essentially a portable, self-contained mini-factory that can be used to make almost any molded product anywhere. It can be operated on site or remotely over the Internet.

"This thing is bigger than we even thought it was," said Jacobs, who believes VEC technology has the potential to change manufacturing worldwide.

In Arlington, Bayliner vice president of operations Dick McEntire described VEC as one of a number of new technologies that have the potential to change boatbuilding. His company is considering several, but he declined to discuss them for competitive reasons.

Genmar began regular production of Larson and Glastron pleasure boats in August at a new $20 million factory in Little Falls, the world’s first automated boat plant.

The new and old Genmar plants stand side-by-side in Little Falls, and show vividly the differences in manufacturing techniques.

At the old 400,000-square-foot factory, the stench of styrene hangs in the air as the open-mold process is carried out. Workers wear waterproof boots, coveralls and face masks while swabbing sheets of fiberglass inside the molds and use power sprayers to apply resin.

After curing, the boat hulls and decks are moved to another area, where workers use hand-held power tools to grind and sand the fiberglass to shape.

At the new plant, about a quarter the size, banks of computers control most aspects of production.

To make the hulls and decks, two composite skins are placed over a polyester mold and hardened through a thermochemical reaction. The mold is then closed and filled with pressurized water that holds the skins together.

Employees dressed in nothing more protective than street clothes use computers to inject a resin mixture through tubes into the closed mold. Computers regulate the mixture and make adjustments for more than 800 variables, including temperature and humidity. Areas that undergo heavy stress are strengthened with computerized precision.

The boats are removed from the closed molds after only 40 minutes and require only a few minutes of curing.

"The old process needed 40 molds to make 40 boats in a day," said Jeffrey Olson, president of Larson-Glastron. With the new process, he said, each mold can be refilled every 40 minutes.

The process also eliminates more than 70 percent of the styrene emissions, Olson said.

Copyright ©2000 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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