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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 inmate arrested after walking off Thomaston jobsite, corrections officers say

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Maine inmate arrested after walking off Thomaston jobsite, corrections officers say


THOMASTON, Maine (WGME) — A Maine inmate is behind bars after corrections officers say he walked off a jobsite nearly a week ago.

45-year-old Brian Day was arrested.

He was being held at Bolduc Correctional Facility before he left a jobsite in Thomaston on Monday.

45-year-old Candice Fisher was also arrested.

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She was wanted by the Rochester, New Hampshire Police Department.



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Tuition-free degrees are a boon for Maine | Opinion

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Tuition-free degrees are a boon for Maine | Opinion


John Baldacci served as Maine’s governor from 2003 to 2011. He led the effort to establish the state’s community college system in 2003. John McKernan was Maine’s 71st governor from 1987 to 1995. He has served as chair of The Foundation for Maine’s Community Colleges since its inception in 2010.

Making the Maine Free College Scholarship permanent for the high school graduates of the Class of 2026 and beyond delivers on a promise the two of us made decades ago — and maintained since — to keep a community college education affordable to as many Mainers as possible.

Now Gov. Janet Mills is working to secure that same promise for future generations, by making permanent the Maine Free College Scholarship. Her plan invests $10 million in state funds annually to guarantee recent high school graduates in Maine a tuition-free community college education. It is a sound and profound decision.

If passed by legislators in Augusta, the investment will pay off for not just for students and their families, but for the state’s coffers in the form of more tax revenue, for local businesses in the form of more skilled labor available and for communities that will have more vibrant, engaged and employed residents.

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Already, more than 23,000 Maine Free College Scholarship-eligible students have participated since the last-dollar scholarship program began in 2022.

The two of us have worked tirelessly, and across party lines, over the past quarter century to evolve the community colleges. As public leaders, we are partners in helping the state’s public two-year colleges find and secure the resources and tools they need to fulfill their state-ordered mandate of creating the educated, skilled and adaptable workforce Maine needs to fill jobs in Maine’s economy.

That was the vision when Gov. Baldacci led the effort to evolve what were then vocational technical colleges into a true community college system that expanded its academic offerings and offered an affordable pathway to four-year colleges.

At the same time, Gov. McKernan started his tenure as chairman of The Foundation for Maine’s Community Colleges, leading fundraising and making connections to strengthen the colleges. To date, the Foundation has raised over $147 million in support of the colleges’ programs, infrastructure, and scholarships — and the Maine Free College Scholarship will allow those philanthropic and grant dollars to stretch even further.

As a state, we committed long ago to making local, affordable access to quality postsecondary education a priority in Maine. Despite having the lowest tuition in New England, affordability remains one of the greatest barriers to higher education for Mainers. Making the Maine Free College Scholarship permanent is the logical, practical and necessary next step to true affordability.

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We now applaud and welcome Gov. Mills into our mutual efforts to keep growing and strengthening Maine’s community colleges and making sure they remain affordable and accessible to the largest number of Mainers possible.

We urge today’s lawmakers to support this economic engine for Maine, giving young people the opportunity to pursue a tuition-free degree — while knowing their state believes in them and their potential.



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Who visited Maine in 2025, and how much did they spend?

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Who visited Maine in 2025, and how much did they spend?


York Beach was packed with people in August 2025 during a stretch of hot, humid weather that brought unusually high temperatures across much of Maine. (Brianna Soukup/Staff Photographer)

Fewer visitors came to Maine last year, but those who did spent more than $9 billion in the state.

The Maine Office of Tourism reported there were 14.15 million visitors in 2025, down 4.4% from the year before. Visitors last year spent $9.37 billion, up 1.4% from 2024, according to the agency’s annual report. That number is not adjusted for inflation, Deputy Director Hannah Collins said.

“While overall visitor counts declined, those who did travel tended to stay slightly longer, travel in larger parties, and demonstrate strong spending patterns,” the report said. “This dynamic contributed to total direct spending growth despite fewer arrivals.”

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The state conducted more than 4,600 interviews online and in person with visitors at local attractions, parks, hotels, visitor centers, service plazas, shops and other destinations between December 2024 and November 2025 to reach its findings.

So who came to Maine, and where did they go?

Here are four takeaways from the report.

MANY VISITORS WERE ALREADY HERE

Most people drove from the East Coast, although more flew in 2025 than in 2024. Nearly 20% of visitors came by plane, mostly to the Portland International Jetport or Boston Logan International Airport. That percentage has been steadily increasing in the years since the COVID-19 pandemic, the report says. In 2022, just 13% flew.

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The state found that more than 80% of visitors to Maine last year came from 16 U.S. states and Canadian provinces. According to the report, 15% of visitors came from Massachusetts. New York and New Hampshire were also high on the list.

Which was the top state? Maine.

Nearly 20% of people, or 2.9 million, counted as visitors last year were residents exploring the state. That’s more than double the number of people who live in Maine because the report counts single trips, not unique visitors.

MANY WERE RETURN VISITORS

Nearly 40% of visitors had been to Maine more than 10 times, the tourism office said. Many return to the same region on every trip. The data shows that 18% of visitors were traveling in Maine for the first time last year. An overwhelming majority — 95% — said they definitely or probably would return for another vacation.

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THERE WERE FEWER CANADIAN VISITORS

A sign on a motel in Old Orchard Beach welcomes tourists back in both English and French in February 2025. The town hosts a large number of Canadian tourists each summer. (Gregory Rec/Staff Photographer)

International travelers account for a small percentage of Maine’s overall tourism.

Less than 5% of visitors came from other countries in 2025, according to the report. Most — 3.6% — came from Canada. That number is down from 2024, a drop attributable to political tensions and economic pressures. In 2024, 5.4% of visitors came from Canada.

A GREATER PERCENTAGE WENT INLAND

Popular regions to visit last year included Greater Portland, the Midcoast, the beaches and islands. More than a quarter visited Down East Maine, including Acadia National Park.

Still, inland regions saw a small increase in their share of visitors, the report shows.

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In summer 2024, 3% of the state’s visitors went to Aroostook County, 9% went to the Kennebec Valley and 16% went to the lakes and mountains. Last summer, 7% went to Aroostook County, 12% went to the Kennebec Valley and 20% visited the lakes and mountains.

Across the state, most people said they came to Maine to relax and unwind, the report says. The most popular activities included enjoying ocean views, eating lobster and other seafood, sightseeing, visiting local breweries, driving for pleasure and hiking.



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