On the studio walls hung Mr. Doeringer’s versions of works by Frank Stella, Wayne Thiebaud, Kaws, Giorgio Morandi, Rauschenberg and Warhol. The knockoffs are smaller than the pieces they’re based on and with clear imperfections — a wobbly line here, a visibly pasted-on bit there — but instantly recognizable.

“They’ll fool you from a distance,” Mr. Doeringer said. “They won’t fool you close up.”

Mr. Doeringer, 44, who has an M.F.A. from Tufts University and the School of the Museum of Fine Arts, has been making his bootlegs of famous art since 2001, when he began selling homemade copies of works by artists like Elizabeth Peyton, John Currin and Damien Hirst from a stand he set up on West 24th Street, near galleries that would be showing some of the very work he was appropriating.

He was inspired, he said, by vendors selling knockoff handbags on Canal Street in downtown Manhattan.

Since then, he’s exhibited in actual galleries, and recently started making more altered riffs on famous works. (“Those in search of exact look-alikes, beware,” Roberta Smith wrote in The New York Times in a review of Mr. Doeringer’s 2014 exhibition, “Paintings & Sculpture,” which featured his takes on Warhol soup cans at the now-shuttered Lower East Side gallery Mulherin & Pollard. “These works are not copies as much as updates based on current company designs.”)