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Type: Posts; User: john.k

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  1. Replies
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    2,146

    The operating rod is a long thinwall tube...

    The operating rod is a long thinwall tube ,containing a long spring,(about 20"long), a dogleg at the open end with a housing containing the operating cam for the bolt......impossible to cast even...
  2. Replies
    27
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    2,146

    The question is of two parts....massive castings...

    The question is of two parts....massive castings ,and small castings....it appears small steel castings with any degree of detail were very difficult to make until the development of steel investment...
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