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World’s biggest 3D printer unveiled in Maine may one day create entire neighborhoods

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World’s biggest 3D printer unveiled in Maine may one day create entire neighborhoods


ORONO, Maine – The world’s largest 3D printer has created a house that can cut construction time and labor. An even larger printer unveiled on Tuesday may one day create entire neighborhoods.

The machine revealed Tuesday at the University of Maine is four times larger than the first one — commissioned less than five years ago — and capable of printing ever mightier objects. That includes scaling up its 3D-printed home technology using bio-based materials to eventually demonstrate how printed neighborhoods can offer an avenue to affordable housing to address homelessness in the region.

Thermoplastic polymers are extruded from a printer dubbed the “Factory of the Future 1.0,” said Habib Dagher, director of UMaine’s Advanced Structures & Composite Center, where both of the current printers are located. It combines robotics operations with new sensors, high-performance computing and artificial intelligence, Dagher said.

Largest 3D Printer
The world’s largest 3D printer is seen Tuesday, April 23, 2024, at the University of Maine, in Orono, Maine.

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Robert F. Bukaty / AP


And there could be even larger printers in the future after the University of Maine breaks ground this summer on a new building.

“We’re learning from this to design the next one,” he said.

3D printer a “beacon of innovation”

Those attending the event included representatives from departments of defense, energy and housing, as well as other stakeholders who plan to utilize the new technologies made available by the printer. Heidi Shyu, undersecretary of defense for research and engineering, said the printer exceeded her expectations and “stands as a beacon of innovation.”

Shrouded by a black curtain, the printer was on and whirring behind the speakers during the event. At the end, the curtain opened revealing the printer was working on a test project for a future boat.

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The printer’s frame fills up the large building in which it’s housed on the UMaine campus, and can print objects 96 feet long by 32 feet wide by 18 feet high (29 meters by 10 meters by 5.5 meters).

It has a voracious appetite, consuming as much as 500 pounds (227 kilograms) of material per hour.

Building homes with a 3D printer

The original printer, christened in 2019, was certified by Guinness World Records as the world’s largest polymer 3D printer, the university said. It was used to create a 600-square-foot, single-family home made of wood fiber and bio-resin materials that are recyclable. Dubbed “BioHome3D,” it showed an ability to quickly produce homes. To meet the growing demand for housing, Maine alone will need another 80,000 homes over the next six years, according to MaineHousing.

Dagher said there’s a shortage of both affordable housing and workers to build homes. The university wants to show how homes can be constructed nearly entirely by a printer with a lower carbon footprint. The buildings and construction sector accounts for roughly 37% of global greenhouse gas emissions, largely due to the production and use of materials such as cement, steel and aluminum that have a significant carbon footprint, according to the United Nations Environment Programme.

Largest 3D Printer
The BioHome3D is seen Tuesday, April 23, 2024, at the University of Maine, in Orono, Maine. The 600-square-foot single-family home was made by UMaine’s original 3D printer in 2019.

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Robert F. Bukaty / AP


Such printed buildings can be recycled, which is unique compared to current construction. “You can basically deconstruct it, you can grind it up if you wish, the 3D printed parts, and reprint with them, do it again,” Dagher said before the event.

“It’s not about building a cheap house or a biohome,” he added, referring to the first 3D-printed house made entirely with bio-based materials. “We wanted to build a house that people would say, ‘Wow, I really want to live there.’”

Future plans for 3D printing

The Army Corps of Engineers provided most of the funding for the new printer, which cost several million dollars, said Dannel Malloy, chancellor of the University of Maine System. It was built by the university in collaboration with Ingersoll Rand for construction of the printer and Somatex for the supporting structure, officials said.

Looking ahead, researchers plan to tinker with the material consumed by the machine, including more bio-based feedstocks from wood residuals that are abundant in Maine, the nation’s most heavily forested state.

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Largest 3D Printer
A bed sits inside the University of Maine’s first 3D printed home on Oct. 12, 2023, in Orono, Maine.

Kevin Bennett / AP


But it can be used for a variety of other creations and already has been used for a range of things, from boats to defense department structures. In the past, the university showed off a 25-foot boat created by the first printer. Upcoming projects with the new printer include a 50-foot boat and houses to serve homeless people, Dagher said.

As for the original 3D printer, it isn’t going away. The two printers can be used in concert to streamline manufacturing by working on the same project — or even part if necessary — and there will be even more of them working together in the future, officials said.

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Maine

Maine Forest Service meets with municipalities to manage spread of Emerald Ash Borer

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Maine Forest Service meets with municipalities to manage spread of Emerald Ash Borer


The Maine Forest Service says the state is home to 500 million ash trees over an inch in diameter that require protection from the Emerald Ash Borer. The invasive pest has already infested 100 areas in Southern Maine and parts of Northern Maine, and quarantines to control the spread of the beetle remain in effect across Maine

State Entomologist Mike Parisio said late last year satellites detected a new infestation in Hermon. Parisio says this year Hermon as well as Corinna and Newport will be release sites for a bio control agent, a non-native wasp that preys on the beetle and has been successful in southern Maine.

“We’re finally getting documentation that we have self-sustaining bio control populations. As soon as we have that we can move on to new sites and try to get those bio controls spread out across the landscape as best and as soon as possible,” he said.

Parisio said this year his team will survey land between established infestations to get a handle on the spread.

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“The focus of the survey program this year is to see if we have populations between these areas that appear isolated or was something moved and started a new satellite infestation.” .

Parisio will meet with municipal officials Monday morning to update them on ways to manage Emerald Ash Borer.

With camping season upon us he wants to remind people to only buy and use firewood from certified kiln operators in Maine who can treat it with high temperatures to ensure it contains no live pests.

The Department of Agriculture, Conservation and Forestry update on EAB is Monday from 10:30 a.m. to 12:00 p.m.

Municipalities can sign up here.

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Hiking in Maine: Maine Trail Center gets generous boost from Mark McAuliffe’s gift

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Hiking in Maine: Maine Trail Center gets generous boost from Mark McAuliffe’s gift


The Maine Trail Crew has been a critical component of the Maine Appalachian Trail Club’s efforts to maintain the state’s 267-mile stretch of the AT – plus side trails, shelters, campsites and privies – since 1976. These folks do the heavy lifting, bridge building and rock work, for example, that regular volunteers cannot.

But for the past 30 years, the seasonal crew, lacking a home base, has been forced to move six times. That situation is about to change in a big way, however, thanks in part to the generous donation of an MATC member.

The new facility, located in Skowhegan, will be formally named “The Maine Trail Center: Honoring the Memory of Mark McAuliffe, a Devoted Member and Volunteer of MATC.” McAuliffe, 66, passed away at his Scarborough home last October, but in his final days he arranged for a monumental gift in excess of $1 million to catapult the club’s 10-year “Trail Champions” capital campaign into a position to finally allow construction to begin.

McAuliffe, educated at Colby College and the Massachusetts Institute of Technology, enjoyed a successful career as a businessman and entrepreneur. He was also a passionate hiker and cyclist, outdoorsman and world traveler, and was actively involved in a variety of professional and nonprofit organizations. Among these groups was the MATC, where he had volunteered as a trail maintainer since 2005.

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“Joe Kilbride and I were close friends and longtime hiking buds of Mark, and we comprised the team that maintained the Buck Hill section of the AT in Monson,” said Chris O’Neil. “It was Mark who turned us on to the North Woods, and Mark who took the initiative to sign us up as maintainers. Mark’s rationale was clear: ‘Think of all the trails we’ve hiked, and how much we’ve taken from them. Don’t we owe it to those trails to give back a little?’

“Mark loved the rigor of the maintenance work and the reward we got from something so simple as making the trail passable, safe and enjoyable,” noted O’Neil. “I get tingles recalling the passing hikers who always thanked us for our ‘work.’ Mark especially found gratification in this inconspicuous and unpretentious aspect of MATC volunteerism: that our toil occurs in the pucker brush, with really only intrinsic rewards.”

The new Maine Trail Center will be a permanent home for the Maine Trail Crew. The modern structure will feature passive solar and other green energy in its design, meeting space, a kitchen, housing for 34 persons, showers, laundry, office space, a tenting area, an outdoor work space, and parking. A maintenance building will serve as storage and as a workshop. Two crew quarters were built onsite by the National Guard last summer.

Construction of the driveway into the facility, which sits on 55 acres of land leased from the Somerset Woods Trustees, has already begun, according to Lester Kenway, the MATC’s president from 2009 to 2022 and the chair of the Trail Champions campaign. Site work will continue through May, the buildings will go up starting in June, and by the end of the year, the project should be complete. The crew will occupy the center in May 2025.

“Mark’s gift made this happen. There’s a sense of relief now that the goal has been achieved. No other AT club has taken on such an enormous project. But this was important to do,” said Kenway. “Mark’s love for Maine and the AT was matched only by his love for his family. Mark’s memory will live on in the memory of all who visit the Maine Trail Center.”

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Close to 500 individuals, foundations and businesses have added their support to the Trail Champions campaign, which has raised $2.97 million to date, including McAuliffe’s bequest. The current pandemic- and inflation-impacted goal is $3.2 million, so fundraising will continue, but the bright sunlight at this end of this long and winding trail is in sight.

Situated just off U.S. Route 2 in Skowhegan and a 40-minute drive from Augusta, the new trail center is centrally located not only to the Appalachian Trail corridor, but to land trusts and other such groups that will also use the multi-purpose facility for functions and meetings, and as a training center for trail design, building, maintenance and restoration, as well as chainsaw use.

Carey Kish of Mount Desert Island is a 20-year volunteer trail maintainer with the MATC and a two-time AT thru-hiker. Please support the MATC effort to maintain our beloved stretch of the AT in Maine (matc.org).


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A busy spring of improvements is planned for Skowhegan area’s Lake George Regional Park



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University of Maine Presque Isle graduates largest class in institute history

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University of Maine Presque Isle graduates largest class in institute history


PRESQUE ISLE, Maine (WABI) – University of Maine Presque Isle’s 115th graduation ceremony was held Saturday.

513 students graduated from the university, the largest-ever graduating class in the institute’s history.

Nationally-acclaimed author Cathie Pelletier was this year’s commencement speaker.

During the graduation event, Pelletier and former Maine State Representative, and UMPI alumnus, David McCrea were presented with Honorary Doctor of Humane Letters Degrees.

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UMPI President Raymond Rice awarded degrees.

After the ceremony, the graduates were given a Star Wars themed surprise in honor of May 4.



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