Tinker's-dam
A wall, generally of clay, formed around a joint, etc., for the purpose of retaining the solder in close contact with the work to be soldered.
Twelve hundred entries from the golden age of cast metal — how bells are founded, why brass is not bronze, what a cupola melts and a core withstands — by Simpson Bolland, the trade's great teacher.
A wall, generally of clay, formed around a joint, etc., for the purpose of retaining the solder in close contact with the work to be soldered.