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PLASMA CUTTING - BASIC TECHNIQUES

V.Ryan © 2020

 
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When plasma cutting, the metal being cut, is set at a comfortable height (if possible). The metal is usually supported above the surface of a work bench, which has a heat resistant surface (such as fire bricks set into the table top or vermicular board).
 
 
 
 
If cutting a batch of the same shape, guides or templates are used, to ‘guide’ the cutting torch. For example, below is a radius attachment, which has a magnetic centre. The centre ‘latches’ to the steel and the plasma cutter rotates about the centre, being ‘pushed’ round by the operator.
 
 
 
 
The ‘stand off roller guide’ seen below, ensures that the plasma cutter is held at the right distance from the surface of the steel. This means that accurate cutting is more likely, especially when cutting large areas.
 
 
Samples of plasma cut shapes and forms are shown below. Plasma cutting is ideal when cutting simple or complex shapes. Equally effective when cutting thin or thick metal sections. Hand-held torches are capable of cutting sheet steel up to 38mm. Computer controlled, large scale torches, can cut sheet steel up to 150mm thick.
 
 
 
 
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