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JUMPING UP / UPSETTING

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This process involves ‘thickening’ a section of the metal being forged. The metal Is heated to ‘yellow heat’ in the area to be thickened. A chalk line can be drawn on the metal, which marks the limit of the thickening. Chalk will show up relatively clearly, even after heating the metal. It may be necessary to cool the rest of the metal.

Pick up tongs are used to hold the metal, which is ‘bounced’ on the anvil. This should result in the heated area deforming, as seen in the diagram.

Another option is to strike the opposite end of the metal with a Blacksmith’s hammer, in this case a Blacksmith’s ball pein hammer is used

 
 
 
 
Upsetting metal is normally the first stage of further blacksmithing. It allows the metal to be ‘broadened’, so that more processes can take place, such as ‘flaring’ one end of a piece of steel.  
     
Jumping / upsetting can be positioned away from the end of the metal. The area is heated, making it malleable. See the diagram opposite.  
 
 
 
Upsetting / jumping up, can be achieved with the aid of a vice and Blacksmith’s hammer. A substantial engineers / fitters vice is seen below. The metal to be forged is secured with care, between the serrated jaws. The Blacksmith then strikes the heated end of the metal, upsetting the area outside the jaws.
 
 
This example of ‘upsetting’, shows the leg vice being used to hold metal being forged. Leg vices are ideal for holding large / substantial sections and for this reason, it is an essential piece of equipment for a Blacksmith.
 
 
 
 
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