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.
The world’s largest 3D printer is seen Tuesday, April 23, 2024, at the University of Maine, in Orono, Maine.
Advertisement
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.
Advertisement
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.
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.
Advertisement
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.
Advertisement
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.
An image from Michael T. Fay’s Facebook page shows him in front of the location on Allen Avenue in Portland, one of the franchises ordered closed. (Facebook screenshot)
Eight Subway locations closed last week by state regulators have reopened.
MTF Subway franchise owner Michael T. Fay has confirmed that all of his franchise locations in Maine are open for business, following the closure of eight of them last Wednesday.
Maine Revenue Services ordered what it characterized as “several” Subway locations closed for “for noncompliance with Part 3, 36 M.R.S.A.,” which primarily governs Maine’s sales and use tax.
Advertisement
The agency did not elaborate and would only reiterate Monday that, “Due to confidentiality requirements, MRS cannot comment on individual tax situations.”
In an email to the Sun Journal on Monday, Fay confirmed that eight of his locations were affected by the ordered closures, after the state revoked the registration certificates for each location.
Fay stated that none of his employees were laid off by the company.
MTF Subway locations affected:
Blue Hill
Brunswick
Advertisement
Hampden
Lisbon Falls
Portland
Topsham
Westbrook
Advertisement
Wiscasset
Advertisement
A long-time journalist, Christopher got his start with Armed Forces Radio & Television after college. Seventeen years at CNN International brought exposure to major national and international stories…
More by Christopher Wheelock
As members of the Portland Maine Stake of The Church of Jesus Christ of Latter-day Saints gathered for a stake Christmas fireside Sunday evening, Dec. 14, they received an unexpected and joyful announcement from the First Presidency.
A house of the Lord will be constructed in Portland, Maine — the state’s first temple.
“We’re pleased to announce the construction of a temple in Portland, Maine. The specific location and timing of the construction will be announced later,” said the First Presidency statement read by Elder Allen D. Haynie, General Authority Seventy and president of the United States Northeast Area.
“This is a reason for all of us to rejoice and thank God for such a significant blessing — one that will allow more frequent access to the ordinances, covenants and power that can only be found in the house of the Lord,” the statement concluded.
Advertisement
Speaking to attendees in the Portland stake center in North Yarmouth, Elder Haynie said: “In a recent meeting of the First Presidency of the Church, a decision was made that, when directed by the First Presidency, the announcement of the construction of a new temple should be made on location by a member of the Quorum of the Twelve Apostles, or a member of an area presidency.
“Such an announcement by a member of the area presidency has never occurred before,” Elder Haynie said. “Tonight will be the first time.”
On behalf of the First Presidency of The Church of Jesus Christ of Latter-day Saints, Elder Allen D. Haynie, General Authority Seventy and president of the United States Northeast Area, announces a new temple will be built in Portland, Maine, during a stake Christmas fireside in the Portland stake center in North Yarmouth, Sunday, Dec. 14, 2025. | Screenshot
The Portland Maine Temple is the first house of the Lord announced by the First Presidency since President Dallin H. Oaks was set apart as the 18th President of the Church on Oct. 14, following the death of President Russell M. Nelson. No temples were announced during October 2025 general conference.
Maine is home to more than 11,000 Latter-day Saints who comprise 27 congregations. The Portland Maine Stake was created earlier this year and is one of three stakes in the state, along with the Augusta and Bangor stakes. Church members in these stakes are currently part of the Boston Massachusetts Temple district.
The stake fireside, titled “Come Let Us Adore Him,” featured a variety of musical selections and messages about the birth of the Savior Jesus Christ. Individuals and families of all ages attended the event. Elder Haynie was accompanied by his wife, Sister Deborah Haynie.
Advertisement
A choir performs during the Portland Maine Stake Christmas fireside on Sunday, Dec. 14, 2025, in North Yarmouth, Maine. | Screenshot
Temple announcement
A new temple in Maine brings the total number of the Church’s temples — operating, under construction, or announced worldwide — to 383.
This temple announcement is a deviation from a pattern established in recent years in which leaders announce temples mostly during the Church’s semiannual general conferences.
Of the 200 temples President Nelson announced during his seven years as President of the Church, only one was announced outside of a general conference session — the Ephraim Utah Temple. President Nelson announced the Ephraim temple on May 1, 2021, in a prerecorded video shown at a press conference inside the Manti Tabernacle. In this message, President Nelson also explained modified plans for the Manti Utah Temple’s renovation.
President Thomas S. Monson, who served as the 16th President of the Church from February 2008 to January 2018, announced 45 temples during his administration — 40 of which were done in a general conference session. Prior to President Monson’s tenure, however, a majority of temples were announced outside of general conference.
More about the Church in Maine
Latter-day Saint missionaries first arrived in Maine in 1832 by canoe, crossing the Piscataqua River which forms the boundary of Maine and New Hampshire. A branch was established in Saco later that year.
In August 1837, missionaries Wilford Woodruff and Jonathan Hale arrived in the Fox Islands, today known as Vinalhaven and North Haven. By that winter, the Church established branches on both islands, with about 100 members total. Church activity slowed in Maine after 1844, when most Church members moved west to escape persecution.
Advertisement
Missionary efforts and Church activities resumed in 1904, and local members hosted worship services and activities in their homes. In 1957, meetinghouses were dedicated in Portland and Bangor. The state’s first stake, the Maine Stake, was organized on June 23, 1968.
The Portland Maine Stake center in North Yarmouth, Maine, is pictured on Sunday, Dec. 14, 2025. | The Church of Jesus Christ of Latter-day Saints
The body of a missing Sedgwick woman was found a short distance from her residence Saturday morning, officials said.
Glenith Gray, 77, was reported missing from her home at 15 Parker Lane at about 3 a.m., according to the Hancock County Sheriff’s Office.
The Maine Warden Service was called in at 6 a.m. to assist with the search, deploying five wardens and three K-9 units.
Cellphone tower data helped lead searchers to Gray’s body at about 9:45 a.m., a short distance from the residence, said Mark Latti, spokesperson for the Maine Warden Service.
Advertisement
Her death was not considered suspicious and appeared to be weather-related, though the state medical examiner’s office was notified, which is standard in unattended deaths.
Gray had worked as a real estate agent and developer, as well as serving in the Maine State Legislature in the 1990s.
