CPC B29C 64/393 (2017.08) [B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B33Y 80/00 (2014.12)] | 18 Claims |
1. A support structure, comprising a solid portion printed using a first material and a non-solid portion printed using a second material, the solid portion comprising a grid structure, both inside and outside of each grid unit of the grid structure being filled with the non-solid portion; wherein a hardness of the first material is different from a hardness of the second material;
a grid density of the grid structure varies within a printing plane,
and/or
an area of a cross-section of a connecting edge of the grid unit varies in a direction perpendicular to the printing plane;
wherein the solid portion comprises a plurality of grid layers parallel with the printing plane, and the plurality of grid layers contains the grid structure; the solid portion further comprises a plurality of pillars, each of the plurality of pillars penetrates at least two adjacent layers of the plurality of grid layers, and both inside and outside of space enclosed by the plurality of pillars and the plurality of grid layers are filled with the non-solid portion.
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