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3D printing using spiral buildup

  • US 9,937,665 B2
  • Filed: 04/01/2016
  • Issued: 04/10/2018
  • Est. Priority Date: 03/12/2013
  • Status: Active Grant
First Claim
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1. A method for building a 3D structure by a continuous or semi-continuous build procedure, comprising the steps of:

  • a. providing a build platform spaced from and separate from, but substantially parallel to, a substrate, said build platform and/or substrate rotatable multiple 360°

    turns,b. continuously depositing a flowable build material on the substrate in a space between the substrate and the build platform,c. said build material solidifying or treated to solidify such that portions of said build material are selectively first solidified to form a first layer of solidified build material attached to said build platform but not the substrate, andd. continuously or semi-continuously depositing additional build material on the substrate in the space between the substrate, said solidified build material attached to said build platform, said build material solidifying such that additional portions of said build material are adhered to prior solidified build material attached to the build platform;

    wherein said build platform and/or substrate is rotated continuously or semi-continuously during the deposition of build material on the build platform such that the distance between the build platform and the substrate is continuously increased throughout each 360°

    rotation of the build platform and/or substrate, said build platform and/or substrate rotating multiple 360°

    turns during the building of said 3D structure.

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