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Home » Innovation » Congrats! University of Maine creates world’s largest 3D printed boat.

Congrats! University of Maine creates world’s largest 3D printed boat.

PortandTerminal.com, October 16, 2019

Dirigo! World’s largest prototype polymer 3D printer, largest solid 3D-printed object, and largest 3D-printed boat achieved by the University of Maine

ORONO, ME – Buoyed by composites technology and the world’s largest 3-D printer, the University of Maine launched itself into the record books as it unveiled the largest solid object ever produced by a 3-D printer on October 10.

The $2.5 million 3D printer and its creation featured at a recent press conference. The vessel is the world’s largest measuring 25-feet, 5,000-pounds and is named 3Dirigo

The printer produced a 25-foot, 2 ½-ton boat using material that’s a blend of plastic and wood cellulose. A Guinness World Records adjudicator was on hand to certify three records: the world’s largest polymer 3-D printer, largest 3-D printed boat, and largest solid 3-D printed item.

The previous record-holder for largest boat created by a 3-D printer was a 4-foot rowboat.

Working from a blueprint, a computer-controlled “printer” makes three-dimensional objects by adding layers of liquid that harden as they cool. The 3-D boat printed at the University of Maine was created over a three days in mid-September.

The printer cost $2.5 million, but the machinery, along with funds for installation, research and development and other costs were covered by the U.S. Army and the U.S. Army Corps of Engineers.

Habib Dagher, the composites center director and a professor of structural engineering, said the university worked with local shipbuilders to develop the boat and potential uses for the technology.

He said the printer can be used to make molds that boatbuilders can use when they make yachts and other watercraft, speeding construction time.

Having the world’s largest 3-D printer in Maine is “a huge win” for the state, said Steve Von Vogt, executive director of the Maine Composites Alliance.

He said the state is positioning itself as a leader in developing composites and manufacturing, and using material that takes advantage of the state’s wood products industry makes it even more attractive. As manufacturers look for ways to produce items without plastics and other petroleum-based materials, he said, blends that use renewable resources will be more attractive.

Dagher said the printer, along with the opportunity to work in the composites center, is attracting students to Maine.

About 160 students a year work in the center, he said. Thirty or so worked on the boat project, he said, with tasks ranging from setting up the printer to overseeing the printing of the boat itself.

“It’s beyond what you would ever get in the classroom,”


The composites center is attracting college students to the state, Dagher said, which, in the long term, could help counteract the aging of the state’s populace. Maine has the highest median age in the country.

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