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Home made bits


la bala
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I found a couple of bits today which i made many years ago. I used to use them when ornamental ironwork was in fashion, candlesticks and stuff like that. The one in the picture was made for cage/basket making. The chuck capacity is 12mm which  will cold twist easily. Today I twisted a simple barley twist.  4 lengths of 6mm round bar weld at the end, stick it in the jig and twist. When cage/basket making, its a slightly different operation. 4 lengths 6mm square bar welded at ends, When you twist bar it shortens, the tailstock on the machine slides along the beam with it. At this stage you just have what looks like a twisted bar. I then lock the tailstock where it is and turn the chuck the opposite way, as the chuck is threaded it forces the bar to untwist and a cage/basket is formed.   The other machine is purely for twisting and will twist lengths about 1200mm.

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