3D printing shrinkage compensation using radial and angular layer perimeter point information
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United States of America Patent
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Feb 6, 2018
Issued Date -
N/A
app pub date -
Oct 11, 2013
filing date -
Oct 11, 2012
priority date (Note) -
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Abstract
Errors caused by shrinkage during 3D printing may be minimized. A shape that most closely corresponds to the shape of a layer to be printed may be selected from a library of shapes. Each shape in the library may have shrinkage information associated with it that includes, for each of multiple points that define a perimeter of the library shape, a radial distance to the point from an origin of a coordinate system, an angle the radial distance makes with respect to an axis of the coordinate system, and information indicative of an anticipated amount by which the point will deviate from its specified location when the shape is printed due to shrinkage. Compensation for anticipated shrinkage may be calculated based on the shrinkage information that is associated with the selected shape from the library. The information indicative of the shape of the layer to be printed may be modified to minimize errors cause by shrinkage based on the calculated compensation.
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