Norm builds a copper-roofed version of a cupola.

In a surprise twist, Norm opens this episode from THIS OLD HOUSE's job site in Milton, Massachusetts. While building a new "dream workshop" on the footprint of the old barn's demolished shell, Norm decides to replicate a version of the antique cupola that once adorned its roof. Back in the New Yankee Workshop, with help from coppersmith Larry Stearn, Norm recreates a copper-roofed version of the original design. Calling it a "true carpentry project which entails every mitre box application," Norm expertly crafts the cupola's louvers and hip roof.