In the new facility, head brewer Marsh-Sachs has 270 barrels of fermentation capacity and can fill 30 16-ounce cans in one minute in the brewery’s new canning line. Now just about anybody in Maine can get their paws on one of OBC’s brews, from its earlier and more popular varieties such as the Kolsch, to more recent brews like the peach- and raspberry-infused Fruitful Kettle Sour and 61 Margin, a double IPA named for OBC’s new digs.

Though he’s had more than a year to prepare for 61 Margin to get up and running, the scale of his and his business partner’s undertaking didn’t sink in for Marsh-Sachs until Tuesday.

“Honestly, it didn’t hit me until the day we opened,” Marsh-Sachs said. “I walked around the whole place and just thought — damn, this is ours. We built this.”

The building was constructed in the 1950s and served several purposes during its half-century as an industrial facility, but for the most part it was a concrete plant, which ceased operations in 2012. Its location — the working-class riverside neighborhood known as the Basin, right next to Ayer’s Island — is one of the lesser-known parts of Orono. The neighborhood’s mix of industrial and residential properties meant most University of Maine students had little reason to go down Margin Street.

Until now, that is. Co-owner Heather Furth said that keeping OBC in Orono was one of the first priorities, when she and her co-owners were looking for a place for the brewery to expand.

“We knew that when it happened and we did take that next step, we had to be in Orono. We’re Orono Brewing. It was really important for us to keep it at home,” Heather Furth said.