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|SPECIALIST HAMMERS - RAISING HAMMER, COLLET HAMMER AND CREASING HAMMER|
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|A Raising hammer is used in conjunction with a polished metal ‘raising stake’, often after a blocking hammer. It is used to raise the sides of a nonferrous sheet metal bowl/ dish, making them ‘deep’.
A Collet hammer has slightly cylindrical faces and it is used to planish nonferrous cylindrical shapes and ring shapes.
A Creasing hammer has narrow polished faces and is normally used to ‘crease’ sheet metal, often the first stage in bending and forming metal during copper work and silver smithing.
|USING A RAISING HAMMER|
|When deeper work, such as a decorative drinking cup is to be made, a raising hammer is used to deepen the sides. The nonferrous metal (copper in this case), is slowly rotated on the stake, whilst at the same time, the raising hammer is used to accurately ‘hammer’ the copper surface, producing the ‘deep’ container. This is a highly skilled process and requires training and practice.|
|USING A COLLET HAMMER|
|The collet hammer is used in this example, to ‘stretch / expand’ a ring of copper. This has the effect of thinning the metal. The ring will form a piece of a decorative sculpture.|
|USING A CREASING HAMMER AND A CREASING STAKE|
One use of a creasing hammer, is to produce a ‘wired edge’ on sheet metalwork. When used along with a creasing stake, the curved edge (known as a bead) can be slowly formed. A ‘wire’ of a suitable diameter, is placed inside the bead.
In sheet metalwork, this type of edge is a ‘safety edge’. Sheet metal edges can be sharp, especially if the sheet metal used is thin. A wired edge is a safe option.
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