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THE TRADITIONAL BLACKSMITH'S HEARTH | ||
V.Ryan © 2020 |
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The Blacksmith’s Hearth is essential for any forgework to take place. Traditional hearths, such as the one seen below, are manufactured from either mild steel or cast steel. Mild steel hearths require a fire brick lining. Both types of hearth need a ‘bed’, built up from builders sand. The fuel is placed on top of the sand (Blacksmith’s Breeze, sometimes referred to as ‘Coke Beans’ or Smithy Coal). |
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BLACKSMITH’S FIRE TOOLS | ||
The Blacksmith needs three important tools, when controlling the hearth and the burning coke. They allow him/her to add more coke, to position it accurately and to rake away debris, allowing air to flow through the coke, enhancing the fire. Without these tools, the fire in the forge would eventually die or produce insufficient temperatures. | ||
USE OF THE SLICE The slice is used to add coke to the ‘heart’ of the fire in the hearth. The coke is taken from the fuel box, where is has been preheated and dried before adding to the hearth. |
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USE OF THE RAKE The rake is used by the Blacksmith to reposition the coke and to remove any ‘spent’ fuel and clinker. This helps to keep the fire in a healthy state, building up heat/temperature. |
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USE OF THE POKE The Blacksmith uses the poke to move coke pieces out of the way, allowing air to penetrate and feed the heart of the fire. Usually, the poke is used along with the rake. |
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LIGHTING THE FORGE Lighting the forge is relatively straightforward. A small hollow / depression is formed in the coke, in front of the tuyere. ‘Rolled up’ newspaper, with a few pieces of kindling (wood), are placed in the hollow and the paper set alight. As the fire takes hold and begins to ‘grow’ in intensity, a small amount of coke is added to the ‘fire’ and a gentle blast of air delivered through the tuyere. |
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During the forging process, more fuel is added and it is raked / poked into position, around the heart of the fire. If this is not done regularly, a hollow fire will develop, as the fuel at the heart burns away. This lowers temperatures and makes maintaining a working fire impossible. It is good practice to turn off the blast of air and to remove the debris, called clinker, using a rake, followed by carefully adding more coke and turning on a gentle blast of air. | ||
MAINTAINING THE FIRE Coke is added as the fire grows in intensity and the air blast is controlled to ensure just enough air is ‘blown’, to encourage the fire. Too much power in the blast, could at this early stage, blow out the fire. |
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