This section is from the book "Cassell's Cyclopaedia Of Mechanics", by Paul N. Hasluck. Also available from Amazon: Cassell's Cyclopaedia Of Mechanics.
The process of cutting out and shaping leaves in wrought iron is briefly thus. The pattern of the leaf required is traced from the drawing gummed on to a suitable piece of sheet iron, which for hammered work may be of the best quality Lowmoor,though Swedish iron is preferable. The outline of the leaf is then carefully cut out with a steel chisel, after which the leaf is heated all over to a uniform temperature and hammered into the required shape on the beak iron of the anvil or the swage iron. As the parts of the leaf are shaped they may be cooled by dipping in water, or water may be poured on, leaving only the unshaped parts red hot. Hammers of various sizes and with different shaped ends will be required, and also flat-, square-, and round-nosed pincers. A very useful tool is a thick cast-metal block, on the surface of which have been sunk the shapes of the leaves that are required. Into these moulds the red-hot metal may be beaten and worked into shape, after which the leaves may be re-heated and bent with the pincers or hammered with round- or oval-faced hammers, so as to give a different effect to each leaf.
 
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