Martha Stewart's second field trip to Center Art Studio, broadcast on Martha Stewart Living Television. Part 1: Polishing copper and pewter. Part 2: Aging hinges and doorknobs to match old hardware, and cleaning works on paper.

			Most metal surfaces that dull and tarnish over time benefit from careful polishing. Lansing notes, however, that many polishes can damage the metals they're intended to help.

		Abrasive polishes can wear through silver plate and even rub away delicate engraving on sterling silver pieces, while liquid polishes can leave harmfully corrosive residues. Lansing and his staff use Nevr-Dull, a treated cotton wadding, which gives them exacting control over the polishing process. The product also works on all kinds of metal and even crystal.

			He adds that pewter is a metal not meant for polishing. Over time, pewter develops a prized patina that adds value to the piece. Instead of polish, he recommends washing pewter objects with a mild liquid soap, such as Murphy's Oil Soap or Ivory Liquid, and water. After the piece dries, he buffs the surface with clear wax to enhance luster and repel dust.