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Method of incremental object fabrication

  • US 5,435,902 A
  • Filed: 10/01/1993
  • Issued: 07/25/1995
  • Est. Priority Date: 10/01/1993
  • Status: Expired due to Term
First Claim
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1. A method of fabricating a three-dimensional object or part comprising the steps of:

  • determining dimensional boundaries of the part within a computer CAD/CAM system, the dimensional boundaries including x, y, and z dimensions;

    providing a reference surface;

    a) forming a first incremental layer of mold material on the reference surface, the incremental layer being selectively interrupted to define at least one dimensional boundary of the part;

    thenb) forming a first incremental layer of part material upon at least the interruption in the first incremental layer of mold material;

    thenc) selectively finishing the incremental layers of mold and part material to form a second reference surface generally parallel to the first reference surface;

    d) forming a second incremental layer of mold material upon portions of the first layers of mold and part material, the second incremental layer being selectively interrupted to define another at least one dimension of the part;

    thene) forming a second incremental layer of part material upon portions of the first layers of mold and part material; and

    repeating steps a) through e) to form a plurality of layers of mold and part material until all dimensional boundaries are defined and the part is fully fabricated.

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