Quiz: Remember the definition of mal de mer?
hollow metal utensils and artifacts. The simplest metalwork technique for making hollowware is to join pieces of sheet metal together, using rivets, solder, or other means. A riveted bucket is a simple example. Raising, a technique dating from at least the 3rd millennium BC, is commonly used for hollowware in silver, copper, and other malleable metals: a disk of sheet metal is gradually shaped into a hollow form over a stake or anvil by a series of hammer blows spiraling from the centre of the convex side; the hammer marks are later removed with a smooth, planishing hammer