The art restorer hired to clean Michelangelo’s “David” for its 500th birthday, has walked off the job, protesting the “modern” cleaning technique chosen by the director of the statue’s gallery. “The gallery director who led an 11-year health check of the statue before it was decided to go ahead with the restoration, wants it to be cleaned using a modern ‘wet’ technique involving small amounts of water. Agnese Parronchi, the restorer, believes that any method other than careful dry brushing to remove the engrained dirt could further erode the protective coating.”