In 1657, the brothers parted ways. François moved to Amsterdam, at the invitation of the city government, to establish a foundry. He cast twenty carillons as well as statues for various sculptors, such as Artus I Quellinus. Pieter travelled through the southern Netherlands, with much time spent in Ghent in present-day Belgium, where he cast the great carillon for the Belfry of Ghent. However, following conflicts with the city of Ghent over the quality of his work, Pieter in 1664 rejoined his brother in Amsterdam where, together, they cast some of their finest carillons, including that of the Dom Tower of Utrecht and the Town Hall (now the Royal Palace on Dam square). Bell production temporarily ceased following the outbreak of the Second Anglo-Dutch War in 1665 as they devoted their foundry to casting artillery.