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3D3DAluminum shape.
I'm not sure what part of the airplane this is the complement of, but since it came from the Boeing surplus store, it must be a shape you're left over with after you cut out some important piece of airplane structure. Either that or someone was just having fun in the machine room.
Source: Boeing Surplus Store
Contributor: Theodore Gray
Acquired: 11 August, 2007
Text Updated: 11 August, 2007
Price: $15
Size: 12"
Purity: 95%