To achieve the above stated object, in the present invention, an alloy of low melting point is used as a filler with {TAIL ~ plasticity} in the space between {HEAD ~ a die protecting member} and the external wall of a seamless die cavity instead of mercury as used in the case of the above mentioned prior art 
To achieve the above stated object , in the present invention , an alloy of low melting point is used as a filler with { TAIL ~ plasticity } in the space between { HEAD ~ a die protecting member } and the external wall of a seamless die cavity instead of mercury as used in the case of the above mentioned prior art
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