Apparatus and methods for handling materials in a 3-D printer
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United States of America Patent
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May 22, 2012
Grant Date -
Sep 29, 2011
app pub date -
Jun 7, 2011
filing date -
May 26, 2006
priority date (Note) -
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Abstract
A method of controlling the flow of unbound powder in a build chamber. A build surface for receiving the powder is provided, with the build surface including a first plate defining holes and a second plate defining a plurality of openings spaced apart and offset from the plurality of holes in the first plate. The second plate is disposed below and spaced from the first plate. A vacuum source is provided below the build surface.
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