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3D parts were also used in thesis research to validate an optics design for an experimental nano-satellite imaging platform.

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STL_requirements
STL_requirements

STL File Requirements

If you're using one of the NPS-licensed CAD programs, it's very likely you can export your part geometry into the .STL file format.  Here are some settings for the more popular CAD programs.  It's best to have your model in English Inch units, but millimeters will work, also.  The basic settings for export deal with Angle Tolerance (how much the normals of the surface triangle can deviate from one another), and Deviation (how much the mesh is allowed to deviate from the CAD part).

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