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Apparatuses, systems and methods for three-dimensional printing

  • US 9,399,256 B2
  • Filed: 06/19/2015
  • Issued: 07/26/2016
  • Est. Priority Date: 06/20/2014
  • Status: Active Grant
First Claim
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1. A method for generating a three-dimensional object suspended in a powder bed, comprising:

  • (a) providing the powder bed in an enclosure, wherein the powder bed comprises individual particles formed of a material selected from the group consisting of an elemental metal, metal alloy, ceramic, and an allotrope of elemental carbon;

    (b) transforming at least a portion of the powder bed into a transformed material; and

    (c) hardening the transformed material to form a hardened material as part of the three-dimensional object, which three-dimensional object comprises one or more layers of hardened material and is suspended in the powder bed during formation, wherein all layers of hardened material have a radius of curvature of at least about 5 centimeters up to substantially flat, and wherein the powder bed is devoid of a supporting scaffold substantially enclosing the three-dimensional object.

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