You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    Practical Methods in the Use of Masters, Mandrels, and Matrices

    Published: 01 January 1962

      Format Pages Price  
    PDF (812K) 15 $25   ADD TO CART
    Complete Source PDF (8.9M) 213 $66   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Electroforming is a process which, by definition, produces parts and is not to be confused with electroplating which provides only a final finish on otherwise produced parts. The implication can immediately be drawn that the electroformer must have far broader knowledge than an electroplater. The supervising electroformer should not only be an expert in the field of electrochemistry, but should also be proficient in mechanical engineering, metallurgy, art, and a host of other fields that could include microwave engineering, since electroforming is being called upon more and more to produce the increasingly accurate and complex waveguides required in radar and microwave communications equipment. This broad scope of proficiency is necessary because an electroform can only be as good as the mandrel, master, or matrix from which it is formed. The electroformer must be prepared properly to design and produce masters that will best serve each particular requirement. The electroformer could be of far greater usefulness to industry if product designers better understood the present state of the electroforming art. New possibilities are constantly being discovered through more intelligent and versatile use of materials and methods for masters, mandrels, and matrices. There follows a discussion of the three basic types of masters, the advantages and disadvantages of each, the variations of each type, and the problems which remain to be solved.

    Author Information:

    Bottomley, Frank R.
    GAR Precision Parts, Inc., Stamford, Conn.

    Committee/Subcommittee: B08.08

    DOI: 10.1520/STP46004S